Heidelberg State Observatory

Heidelberg (; Palatine German: ''Heidlberg'') is a city in the German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914, of which roughly a quarter consisted of students.

Located about south of Frankfurt, Heidelberg is the fifth-largest city in Baden-Württemberg. Heidelberg is part of the densely populated Rhine-Neckar Metropolitan Region.

Heidelberg University, founded in 1386, is Germany's oldest and one of Europe's most reputable universities. Heidelberg is a scientific hub in Germany and home to several internationally renowned research facilities adjacent to its university, including the European Molecular Biology Laboratory and four Max Planck Institutes. The city has also been a hub for the arts, especially literature, throughout the centuries, and it was designated a " City of Literature" by the UNESCO Creative Cities Network.

Heidelberg was a seat of government of the former Electorate of the Palatinate and is a popular tourist destination due to its romantic cityscape, including Heidelberg Castle, the Philosophers' Walk, and the Baroque old town.

Geography

Heidelberg is located on the eastern edge of the Upper Rhine Plain (German: "Oberrheinebene"), at the place where the river Neckar leaves its narrow valley through the Odenwald mountains and begins the last leg of its journey across the plain towards Mannheim, where it merges into the Rhine about 20 kilometers downstream.

A part of Heidelberg, including the historical old town and the famous Heidelberg Castle, is located in the narrow Neckar valley. Other parts (mostly quarters from around the 19th century or newer, or originally independent, later incorporated villages) sprawl out into the Rhine Plain and along the Bergstraße (route) ("mountain road"), the narrow strip of characteristic landscape along the sharp border between the plain and the Odenwald mountains.

The town is bordered by the Königsstuhl (568 m), the Gaisberg (375 m) and the Heiligenberg (445 m) mountains.

Heidelberg is on European walking route E1 (Sweden- Umbria).

Flora and fauna

Heidelberg is among the warmest regions of Germany and plants atypical of the central-European climate flourish there, including almond and fig trees, many kinds of palm trees and olive trees. Alongside the ''Philosophenweg'' (Philosophers' Walk) on the opposite side of the Old Town, winegrowing was restarted in 2000.

There is a wild population of African rose-ringed parakeets, and a wild population of Siberian swan geese, which can be seen mainly on the islands in the Neckar near the district of Bergheim.

Administrative structures

Heidelberg is a unitary authority within the Regierungsbezirk Karlsruhe. The Rhein-Neckar-Kreis rural district surrounds it and has its seat in the town, although the town is not a part of the district. Heidelberg is a part of the Rhine-Neckar Metropolitan Region, often referred to as the Rhein-Neckar Triangle.

This region consists of the southern part of the State of Hessen, the southern part of the State of Rhineland-Palatinate (''Vorderpfalz''), the administrative districts of Mannheim and Heidelberg, and the municipalities of the Rhein-Neckar-Kreis. The Rhein-Neckar Triangle became a European metropolitan area in 2005.

Heidelberg consists of 15 districts distributed in six sectors of the town. In the central area are Altstadt (the Old Town), Bergheim and Weststadt; in the north, Neuenheim and Handschuhsheim; in the east, Ziegelhausen and Schlierbach; in the south, Südstadt, Rohrbach, Emmertsgrund, and Boxberg; in the southwest, Kirchheim; in the west, Pfaffengrund, Wieblingen, and a new district, named ''Bahnstadt'', is built on land in Weststadt and Wieblingen. The new district will have approximately 5,000–6,000 residents and employment for 7,000. Further, new residential space for 10,000–15,000 residents was made available in Patrick Henry Village following the departure of the US Armed Forces.

Neighbouring communes

The following towns and communes border the city of Heidelberg, beginning in the west and in a clockwise direction: Edingen-Neckarhausen, Dossenheim, Schriesheim, Wilhelmsfeld, Schönau, Neckargemünd, Bammental, Gaiberg, Leimen, Sandhausen, Oftersheim, Plankstadt, Eppelheim (all part of the Rhein-Neckar-Kreis) and Mannheim.

Climate

Heidelberg has a humid subtropical climate ( Köppen climate classification ''Cfa''), defined by the protected valley between the Pfälzerwald and the Odenwald. The almost year round warm temperatures are usually determined by Atlantic air masses in the winter and increased influence from the western Mediterranean in summer. This results in drier summers and wetter, cloudier winters on average.

In contrast to the nearby Upper Rhine Plain, Heidelberg's position in the valley leads to more frequent easterly winds than average. The hillsides of the Odenwald favour clouding and precipitation.

Spring starts early and is one of the warmest in Europe besides the Mediterranean Coast. Especially April has a tendency to be also very dry, while the rising temperatures in May can create some thunderstorms with higher precipitation levels. Nights start cold and usually stay fresh throughout almost the whole spring, while day temperatures can already become hot from April on (30°C/86°F and higher).

Summers are long, hot and mostly dry. Day temperatures are around 28-30 on average, but will often rise beyond 35°C (95°F) in midsummer. A few single evening thunderstorms are usually the only measurable precipitation. With almost 300 sunshine hours on average, July is also the sunniest month of the year. Nights can stay pleasant, although the rate of nights with lows up to 26°C (78°F) are increasing significantly in the recent years.

Autumn starts very warm or even hot in September and cools down to typical winter temperatures for the region until the end of November. Precipitation levels are increasing and, due to the decreasing sunlight, the region gets affected by fog more frequently from the second part of October on. On the other hand, day temperatures will mostly stay around or above 20°C (68°F) until at least mid October (“Altweibersommer”). Nights cool down significantly during the month, but will usually remain above 10°C (50°F) until the second half of October.

Winters are mostly mild, though light night frosts do occur in the coldest months. Snow is a rare event and precipitation normally falls as rain. Besides that, winters are the wettest time of the year with frequent western winds blowing from the Atlantic. Storms (“Orkane”) can create severe damage and the Neckar is often affected by floods.

According to the German Meteorological Service, Heidelberg was the warmest place in Germany in 2009. With around 2,100 hours of sunshine it is also one of the sunniest of the country.

History

Early history

Between 600,000 and 200,000 years ago, " Heidelberg Man" died at nearby Mauer. His jaw bone was discovered in 1907. Scientific dating determined his remains as the earliest evidence of human life in Europe. In the 5th century BC, a Celtic fortress of refuge and place of worship were built on the ''Heiligenberg'', or "Holy Mountain". Both places can still be identified. In 40 AD, a fort was built and occupied by the 24th Roman cohort and the 2nd Cyrenaican cohort (CCG XXIIII and CCH II CYR). The late Roman Emperor Valentinian I, in 369 AD, built new and maintained older ''castra'' (permanent camps) and a signal tower on the bank of the Neckar. They built a wooden bridge based on stone pillars across it. The camp protected the first civilian settlements and was eventually captured by Germanic tribes. The local administrative center in Roman times was the nearby city of Lopodunum, today known as Ladenburg.

Middle Ages

Modern Heidelberg can trace its beginnings to the fifth century. The village ''Bergheim'' ("Mountain Home") is first mentioned for that period in documents dated to 769 AD. ''Bergheim'' now lies in the middle of modern Heidelberg. The people gradually converted to Christianity. In 870 AD, the monastery of St. Michael was founded on the Heiligenberg inside the double rampart of the Celtic fortress. Around 1130, the Neuburg Monastery was founded in the Neckar valley. At the same time, the bishopric of Worms extended its influence into the valley, founding Schönau Abbey in 1142. Modern Heidelberg can trace its roots to this 12th-century monastery. The first reference to Heidelberg can be found in a document in Schönau Abbey dated to 1196. This is considered to be the town's founding date. In 1156, Heidelberg castle and its neighboring settlement were taken over by the house of Hohenstaufen. Conrad of Hohenstaufen became Count Palatine of the Rhine (german: link=no, Pfalzgraf bei Rhein). In 1195, the Electorate of the Palatinate passed to the House of Welf through marriage. In 1214, Ludwig I, Duke of Bavaria acquired the Palatinate, as a consequence of which the castle came under his control. By 1303, another castle had been constructed for defense. In 1356, the Counts Palatine were granted far-reaching rights in the Golden Bull, in addition to becoming Electors. In 1386, Heidelberg University was founded by Rupert I, Elector Palatine.

Modern history

Heidelberg University played a leading part in Medieval Scholasticism, Renaissance humanism, the German Reformation, and in the subsequent conflict between Lutheranism and Calvinism during the 15th and 16th centuries. In April 1518, a few months after proclaiming his ''Ninety-five Theses'', Martin Luther was received in Heidelberg, to defend them.

Heidelberg's library, founded in 1421, is the oldest existing public library in Germany.

In 1537, the castle located higher up the mountain was destroyed by a gunpowder explosion. The duke's palace was built at the site of the lower castle.

Elector Frederick III, sovereign of the Electoral Palatinate from 1559 to 1576, commissioned the composition of a new Catechism for his territory. While the catechism's introduction credits the "entire theological faculty here" (at the University of Heidelberg) and "all the superintendents and prominent servants of the church" for the composition of the Catechism, Zacharius Ursinus is commonly regarded as the catechism's principal author. Caspar Olevianus (1536–1587) was formerly asserted as a co-author of the document, though this theory has been largely discarded by modern scholarship. Johann Sylvan, Adam Neuser, Johannes Willing, Thomas Erastus, Michael Diller, Johannes Brunner, Tilemann Mumius, Petrus Macheropoeus, Johannes Eisenmenger, Immanuel Tremellius and Pierre Boquin are all likely to have contributed to the Catechism in some way. Frederick himself wrote the preface to the Catechism and closely oversaw its composition and publication. Frederick, who was officially Lutheran but had strong Reformed leanings, wanted to even out the religious situation of his highly Lutheran territory within the primarily Catholic Holy Roman Empire. The Council of Trent had just concluded with its conclusions and decrees against the Protestant faiths, and the Peace of Augsburg had only granted toleration for Lutheranism within the empire where the ruler was Lutheran. One of the aims of the catechism was to counteract the teachings of the Roman Catholic Church as well as Anabaptists and "strict" Gnesio-Lutherans like Tilemann Heshusius and Matthias Flacius, who were resisting Frederick's Reformed influences, particularly on the matter of Eucharist ( the Lord's Supper). The Catechism-based each of its statements on biblical proof-texts, and Frederick himself would defend it as biblical, not reformed, at the 1566 Diet of Augsburg when he was called to answer to charges of violating the Peace of Augsburg. This was the Heidelberg Catechism, officially called the ″Catechism, or Christian Instruction, according to the Usages of the Churches and Schools of the Electoral Palatinate.″

In November 1619, the Royal Crown of Bohemia was offered to the Elector, Frederick V. (He was married to Princess Elizabeth, eldest daughter of James VI and I of Scotland and England, respectively.) Frederick became known as the "Winter King", as he reigned for only one winter before the Imperial House of Habsburg regained Bohemia by force. His overthrow in 1621 marked the beginning of the Thirty Years' War. In 1622, after a siege of two months, the armies of the Catholic League, commanded by Johann Tserclaes, Count of Tilly, captured the town. Tilly gave the famous ''Bibliotheca Palatina'' from the Church of the Holy Spirit to the Pope as a present. The Catholic and Bavarian House of Wittelsbach gained control over the Palatinate and the title of Prince-Elector.

In late 1634, after the Swedish army had conquered Heidelberg, imperial forces attempted to recapture the city. They quickly took the city, but were unable to take the castle. As they prepared to blow up its fortifications with gunpowder the French army arrived, 30,000 men strong, led by Urbain de Maillé-Brézé, who had fought in many battles and participated in the Siege of La Rochelle (1627–1628), and Jacques-Nompar de Caumont, duc de La Force. They broke the siege and drove off the Imperial forces.

In 1648, at the end of the war, Frederick V's son Charles I Louis, Elector Palatine, was able to recover his titles and lands. To strengthen his dynasty, Charles I Louis arranged the marriage of his daughter Liselotte to Philip I, Duke of Orléans, brother of Louis XIV, King of France. In 1685, after the death of Charles Louis' son, Elector Charles II, King Louis XIV laid claim to his sister-in-law's inheritance. The Germans rejected the claim, in part because of religious differences between local Protestants and the French Catholics, as the Protestant Reformation had divided the peoples of Europe. The War of the Grand Alliance ensued. In 1689, French troops took the town and castle, bringing nearly total destruction to the area in 1693. As a result of the destruction due to repeated French invasions related to the War of the Palatinate Succession coupled with severe winters, thousands of German Calvinist Palatines emigrated in the early 18th century. They fled to other European cities and especially to London (where the refugees were called "the poor Palatines"). In sympathy for the Protestants, in 1709–1710, Queen Anne's government arranged transport for nearly 6,000 Palatines to New York. Others were transported to Pennsylvania, and to South Carolina. They worked their passage and later settled in the English colonies there.

In 1720, after assigning a major church for exclusively Catholic use, religious conflicts with the mostly Protestant inhabitants of Heidelberg caused the Roman Catholic Prince-Elector Charles III Philip to transfer his court to nearby Mannheim. The court remained there until the Elector Charles Theodore became Elector of Bavaria in 1777 and established his court in Munich. In 1742, Elector Charles Theodore began rebuilding the Palace. In 1764, a lightning bolt destroyed other palace buildings during reconstruction, causing the work to be discontinued.

1803 to 1933

Heidelberg fell to the Grand Duchy of Baden in 1803. Charles Frederick, Grand Duke of Baden, re-founded the university, named "Ruperto-Carola" after its two founders. Notable scholars soon earned it a reputation as a "royal residence of the intellect". In the 18th century, the town was rebuilt in the Baroque style on the old medieval layout.

In 1810 the French revolution refugee Count Charles Graimberg began to preserve the palace ruins and establish a historical collection. In 1815, the Emperor of Austria, the Emperor of Russia and the King of Prussia formed the " Holy Alliance" in Heidelberg. In 1848, the German National Assembly was held there. In 1849, during the Palatinate-Baden rebellion of the 1848 Revolutions, Heidelberg was the headquarters of a revolutionary army. It was defeated by a Prussian army near Waghaeusel. The city was occupied by Prussian troops until 1850. Between 1920 and 1933, Heidelberg University became a center of notable physicians Czerny, Erb, and Krehl; and humanists Rohde, Weber, and Gandolf.

Nazism and the World War II-period

During the Nazi period (1933–1945), Heidelberg was a stronghold of the NSDAP/Nazi party, (the National Socialist German Workers' Party) the strongest party in the elections before 1933 (the NSDAP obtained 30% at the communal elections of 1930). The NSDAP received 45.9% of the votes in the German federal election of March 1933 (the national average was 43.9%).
In 1934 and 1935 the ''Reichsarbeitsdienst'' (State Labor Service) and Heidelberg University students built the huge ''Thingstätte'' amphitheatre on the ''Heiligenberg'' north of the town, for Nazi Party and SS events. A few months later, the inauguration of the huge Ehrenfriedhof memorial cemetery completed the second and last NSDAP project in Heidelberg. This cemetery is on the southern side of the old part of town, a little south of the Königstuhl hilltop, and faces west towards France. During World War II and after, Wehrmacht soldiers were buried there.

During the '' Kristallnacht'' on November 9, 1938, Nazis burned down synagogues at two locations in the city. The next day, they started the systematic deportation of Jews, sending 150 to Dachau concentration camp. On October 22, 1940, during the "Wagner Buerckel event", the Nazis deported 6000 local Jews, including 281 from Heidelberg, to Camp Gurs concentration camp in France. Within a few months, as many as 1000 of them (201 from Heidelberg) died of hunger and disease. Among the deportees from Heidelberg, the poet Alfred Mombert (1872–1942) left the concentration camp in April 1941 thanks to the Swiss poet Hans Reinhart but died shortly thereafter due to illness he contracted while held prisoner. From 1942, the deportees who had survived internment in Gurs were deported to Eastern Europe, where most of them were murdered.

On March 29, 1945, German troops left the city after destroying three arches of the old bridge, Heidelberg's treasured river crossing. They also destroyed the more modern bridge downstream. The U.S. Army ( 63rd Infantry, 7th Army) entered the town on March 30, 1945. The civilian population surrendered without resistance.

Heidelberg, unlike most German cities and towns, was spared from Allied bombing raids during the war. A popular belief is that Heidelberg escaped bombing because the U.S. Army wanted to use the city as a garrison after the war, but, as Heidelberg was neither an industrial center nor a transport hub, it did not present a tactical or strategic target. Other notable university towns, such as Tübingen and Göttingen, were spared bombing as well. Allied air raids focused extensively on the nearby industrial cities of Mannheim and Ludwigshafen.

The U.S. Army may have chosen Heidelberg as a garrison base because of its excellent infrastructure, including the Heidelberg–Mannheim Autobahn (motorway), which connected to the Mannheim–Darmstadt–Frankfurt Autobahn, and the U.S. Army installations in Mannheim and Frankfurt. The intact rail infrastructure was more important in the late 1940s and early 1950s when most heavy loads were still carried by train, not by truck. Heidelberg had the untouched Wehrmacht barracks, the "Grossdeutschland Kaserne" which the US Army occupied soon after, renaming it the Campbell Barracks.

History after 1945

In 1945, the university was reopened relatively quickly on the initiative of a small group of professors, among whom were the anti-Nazi economist Alfred Weber and the philosopher Karl Jaspers. The surgeon Karl Heinrich Bauer was nominated rector.

On 9 December 1945, US Army General George S. Patton was involved in a car accident in the adjacent city of Mannheim and died in the Heidelberg US Army hospital on December 21, 1945. His funeral ceremony was held at the Heidelberg-Weststadt ''Christuskirche'' (Christ Church), and he was buried in the 3rd Army cemetery in Luxembourg.

During the post-war military occupation, the U.S. Army used the ''Thingstätte'' for cultural and religious events. Civilian use started in the early to mid-1980s for occasional concerts and other cultural events. Today, the celebrations on ''Hexennacht'' ("Witches' Night"), also called Walpurgis Night), the night of April 30, are a regular "underground" fixture at the ''Thingstätte''. Thousands of mostly young people congregate there to drum, to breathe fire, and to juggle. The event has gained fame throughout the region, as well as a certain notoriety due to the amount of litter left behind. Officially, this event is forbidden due to security concerns. The City declares it will fence the Thingstätte and prosecute any trespassers.

In 2022, a mass shooting occurred in the university, killing a woman and injuring three other people. The gunman then committed suicide.

Population

The population of the city of Heidelberg exceeded 100,000 for the first time in 1946. It is a city with an international population, including one of the largest American communities outside North America, but this is not analysed in the Heidelberg population statistics. At the end of December 2011, the city had 149,633 inhabitants with an official primary residence in Heidelberg (not including the soldiers and employees of the U.S. Army and their dependents, a total of about 20,000 people), a historic high.

The following table shows the number of inhabitants within the boundaries of the city at the time. To 1833 they are mostly estimates, then census results or official updates of the statistical offices of the time or the city administration. The data refer from 1843 to the "local population", from 1925 to the resident population and since 1987 the "population at the site of their main dwelling." Prior to 1843 the population was determined by non-uniform collection procedures.

¹ Census results

With a fertility rate of 1.1 children per woman in the ''Stadtkreis'' (county), Heidelberg had the lowest fertility rate in Baden-Württemberg in 2008.

Politics

Since 2006, the ''Oberbürgermeister'' (lord mayor) of Heidelberg has been the independent Eckart Würzner. From 1990 to 2006, the mayor was Beate Weber ( SPD).

The council consists of 48 volunteer members with the mayor as chairman. The council is directly elected for a term of five years. The task of the council is to decide all the affairs of the city, with the mayor presiding. The council controls the city administration and oversees the enforcement of its decisions.

Heidelberg has always been a stronghold of the Greens. For the municipal elections in 2009, they split into the Green Alternative List and Alliance 90/The Greens and each ran their own lists. Together they gained 10 seats to become the strongest force for the first time.

In September 2011, two members of the GAL Group joined the Alliance 90/The Greens, so that together with the members of , they formed the largest group in the council.

For elections to the Bundestag, part of the Heidelberg constituency.

Cityscape

The old town

The "old town" (german: link=no, Altstadt), on the south bank of the Neckar, is long and narrow. It is dominated by the ruins of Heidelberg Castle, 80 metres above the Neckar on the steep wooded slopes of the Königstuhl (''King's chair or throne'') hill.
*The Main Street (''Hauptstrasse''), a mile-long pedestrian street, running the length of the old town.
*The old stone bridge was erected 1786–1788. A medieval bridge gate is on the side of the old town, and was originally part of the town wall. Baroque tower helmets were added as part of the erection of the stone bridge in 1788.
*The Church of the Holy Spirit (''Heiliggeistkirche''), a late Gothic church in the marketplace of the old town.
*The Karls‘ gate (''Karlstor'') is a triumphal arch in honour of the Prince Elector Karl Theodor, located at Heidelberg's east side. It was built 1775–1781 and designed by Nicolas de Pigage.
*The house ''Zum Ritter Sankt Georg'' (Knight St. George) is one of the few buildings to survive the War of Succession. Standing across from the Church of the Holy Spirit, it was built in the style of the late Renaissance. It is named after the sculpture at the top.
*The ''Marstall'' (Stables), a 16th-century building on the Neckar that has served several purposes through its history. It is now a cafeteria for the university.

Heidelberg Castle

The castle is a mix of styles from Gothic to Renaissance. Prince Elector Ruprecht III (1398–1410) erected the first building in the inner courtyard as a royal residence. The building was divided into a ground floor made of stone and framework upper levels. Another royal building is located opposite the Ruprecht Building: the Fountain Hall. Prince Elector Philipp (1476–1508) is said to have arranged the transfer of the hall's columns from a decayed palace of Charlemagne from Ingelheim to Heidelberg.

In the 16th and 17th centuries, the Prince Electors added two palace buildings and turned the fortress into a castle. The two dominant buildings at the eastern and northern side of the courtyard were erected during the rule of Ottheinrich (1556–1559) and Friedrich IV (1583–1610). Under Friedrich V (1613–1619), the main building of the west side was erected, the so-called "English Building".

The castle and its garden were destroyed several times during the Thirty Years' War and the Palatine War of Succession. As Prince Elector Karl Theodor tried to restore the castle, lightning struck in 1764, and ended all attempts at rebuilding. Later on, the castle was misused as a quarry; stones from the castle were taken to build new houses in Heidelberg. This was stopped in 1800 by Count Charles de Graimberg, who then began the process of preserving the castle.

Although the interior is in Gothic style, the King's Hall was not built until 1934. Today, the hall is used for festivities, e.g. dinner banquets, balls and theatre performances. During the Heidelberg Castle Festival in the summer, the courtyard is the site of open air musicals, operas, theatre performances, and classical concerts performed by the Heidelberg Philharmonics.

The castle is surrounded by a park, where the famous poet Johann von Goethe once walked. The Heidelberger Bergbahn funicular railway runs from Kornmakt to the summit of the Königstuhl via the castle.

The castle looks over the entire city of Heidelberg and the Neckar Valley.

Philosophers' Walk

On the northern side of the Neckar is located the Heiligenberg (''Saints' Mountain''), along the side of which runs the Philosophers' Walk (german: link=no, Philosophenweg), with scenic views of the old town and castle. Traditionally, Heidelberg's philosophers and university professors would walk and talk along the pathway. Farther up the mountain lie the ruined 11th-century Monastery of St. Michael, the smaller Monastery of St. Stephen, a Nazi-era amphitheater, the so-called Pagan's hole and the remains of an earthen Celtic hill fort from the 4th century BC.

Heidelberg churches

There are many historical churches in Heidelberg and its surroundings. The Church of the Holy Spirit has been shared over the centuries since the Protestant Reformation by both Catholics and Protestants. It is one of the few buildings to survive the many wars during the past centuries. It was rebuilt after the French set fire to it in 1709 during the War of the Palatinian Succession. The church has remains of the tombs and epitaphs of the past Palatinate electors. This Church stands in the ''Marktplatz'' next to the seat of local government. In 1720, Karl III Philip, Elector Palatine came into conflict with the town's Protestants as a result of giving the Church of the Holy Spirit exclusively to the Catholics for their use. It had previously been split by a partition and used by both congregations. Due to pressure by the mostly Protestant powers of Prussia, Holland, and Sweden, Prince Karl III Philip gave way and repartitioned the church for joint use. In 1936 the separating wall was removed. The church is now exclusively used by Protestants. Furthermore, there is the Catholic Church of the Jesuits. Its construction began in 1712. It was completed with the addition of a bell tower from 1866 to 1872. The church is also home to the Museum für sakrale Kunst und Liturgie (Museum of Ecclesiastical

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