Canton of Grisons

The Grisons () or Graubünden,Names include:
*german: (Kanton) Graubünden ;
* Romansh:
** rm, label=Sursilvan, (Cantun) Grischun
** rm, label= Vallader, (Chantun) Grischun
** rm, label= Puter, (Chantun) Grischun
** rm, label= Surmiran, (Cantun) Grischun
** rm, label= Sutsilvan, (Cantùn) Grischùn
** rm, label= Rumantsch Grischun, (Chantun) Grischun;
* it, (Cantone dei) Grigioni ;
*french: (Canton des) Grisons .
See also other names. more formally the Canton of the Grisons or the Canton of Graubünden, is one of the twenty-six cantons of Switzerland. It has eleven regions, and its capital is Chur. The German name of the canton, , translates as the "Grey Leagues", referring to the canton's origin in three local alliances, the Three Leagues. The other native names also refer to the Grey League: in Sutsilvan, in the other forms of Romansh, and in Italian. ''" Rhaetia"'' is the Latin name for the area. The Alpine ibex is the canton's heraldic symbol.

The largest and easternmost canton of Switzerland, it is also one of the three large southern Alpine cantons, along with Valais and Ticino. It is the most diverse canton in terms of natural and cultural geography, as it encompasses both sides of the Alps and several natural and cultural regions. The diversity of the canton is often compared to that of Switzerland as a whole and warrants it the name of "Little Switzerland". The Grisons is bordered by four cantons: Ticino to the south; Uri to the west; and Glarus and St. Gallen to the north. The canton is also bordered by Liechtenstein to the north; Austria's federated states of Vorarlberg and Tyrol to the north and east; and Italy's autonomous province of South Tyrol and region of Lombardy to the south.

The Grisons is the only trilingual canton of Switzerland. It is also the only one where Romansh, Switzerland's fourth national language, has official status. Romansh language and culture is an important part of local identity. In the canton had a population of . It is the least densely populated canton of Switzerland. The only sizable city in the canton is Chur, as the majority of the population lives in mountainous areas, including some of the most remote valleys of the country. One of the birthplaces of winter sports, the canton is a major tourist destination year-round, including a large number of Alpine resort towns, notably Davos and St. Moritz. The canton is also renowned for its extensive narrow-gauge railway network, operated by the Rhaetian Railway, and linking the capital with most valleys of the Grisons.

Formerly occupied by the Rhaeti, most of the lands of the canton became part of the Roman province called Raetia, which was established in 15 BC, with ''Curia'', a settlement dating back to the Pfyn culture, as capital city. The area later became part of the lands of the diocese of Chur. The late middle ages saw the foundation of the League of God's House, the Grey League and the League of the Ten Jurisdictions. In 1471 an alliance gave birth to the Three Leagues, and before the end of the 15th century, the latter became an ally of the Old Swiss Confederacy. In 1803 the Three Leagues finally became one of the cantons of the Confederation.

Geography and climate

The Grisons is Switzerland's largest and at the same time easternmost canton. Its geography, essentially marked by the Alps, is complex and encompasses a wide range of climates and ecosystems. It is one of the three large southern Alpine cantons, along with Ticino and Valais, which comprehend regions on the south side of the Alps. But contrary to those (and all other cantons), it fully extends on both sides of the great Alpine barrier, from the northern plains at Maienfeld to the southern plains at Roveredo. However, a large portion of the canton is neither clearly north nor south of the Alps, it is the Engadin (the "garden of the Inn"), a large inner Alpine valley oriented towards eastern Europe. Therefore the canton comprehends four of the five drainage basins of the country. The north of the canton is drained by the Rhine (ending in the North Sea), the south by the Po and Adige through several affluents (Mediterranean Sea), and the Engadin by the Danube through the Inn (Black Sea).Topographic map of the Grisons
Swisstopo. Retrieved 8 March 2021

The Grisons lies fully within the Alps, with elevations above sea-level ranging from . It is both one of the highest and lowest cantons, and the second-highest when considering mean elevation. As a consequence, its topography is extremely rugged and many of the highest settlements in the country (and Europe) are found there, notably in the Upper Engadin. The mountains are numerous and largely over 1,000 summits can be found in the canton. The highest is Piz Bernina, closely followed by numerous peaks in the homonymous range. Other prominent mountains are Piz Russein, Piz Kesch, Calanda, Aroser Rothorn and Rheinwaldhorn, see list of mountains of Graubünden for a more exhaustive list. The canton includes numerous subranges of the Alps other than the Bernina. These are the Albula, the Bregaglia, the Glarus, the Gotthard, the Lepontine, the Livigno, the Plessur, the Oberhalbstein, the Ortler, the Rätikon, the Samnaun, the Sesvenna and the Silvretta ranges.

The regions on the north side of the Alps are all drained by the Rhine and form an intricate network of valleys. The Rhine is both one of the longest rivers within the canton and the only one flowing directly into a sea. The sources of the Rhine are found in the west of the canton and form the Anterior Rhine and the Posterior Rhine. These two rivers converge at Reichenau to form the Rhine in the strict sense of the term. Just after the convergence, the valley opens and its floor constitutes the flattest plains of the canton, from Domat/Ems to Fläsch at the St. Gallen border. In the area around Chur, at the foot of the Calanda, the Rhine progressively changes its direction, from eastward to northward. The Anterior Rhine and Posterior Rhine include numerous tributaries as well before their own convergence. The former constitutes a long and straight valley, the Surselva, shut off from the lower plains by the Rhine Gorge. Its biggest tributaries are the rivers Glogn, Valser Rhine, Rabiusa, forming respectively the Val Lumnezia, the Vals Valley and the Safiental. The other one, the Posterior Rhine, notably collects the waters of the Avers Rhine and the Albula, which in turn collects the waters of the Gelgia and the Landwasser. Similarly to the Anterior Rhine, the upper portion of the Posterior Rhine is also shut off from the plains by the Viamala Gorge. After the convergence with the Albula, the Posterior Rhine forms a wide valley, the Domleschg, until it meets its anterior counterpart. After that, the Rhine collects the water of two important rivers: the Plessur at Chur, forming the valley of the Schanfigg, and the Landquart at the homonymous town, forming the Prätigau.

The Engadin is entirely drained by the Inn and is the only valley in Switzerland in the Danube basin. The Inn is one of the longest rivers in the canton and forms an almost straight valley, from the Maloja Pass to Martina, with a change of direction near Zernez. Despite its length and numerous tributaries, only a few long rivers converge with the Inn. These are the Flaz (forming the Val Bernina), the Spöl (forming the Val da Spöl) and the Clemgia (forming the Val S-charl). In the lower part of the Engadin is also the side valley of Samnaun. The main passes connecting the Engadin with the northern Grisons are (from west to east): the Julier Pass, the Albula Pass and the Flüela Pass.

The valleys on the south side of the Alps are not contiguous to each other and form four distinct regions. The Mesolcina, drained by the Moesa, the Val Bregaglia, drained by the Mera, the Val Poschiavo, drained by the Poschiavino, and the Val Müstair, drained by the Rom. The first three are in the Po basin and the last one is in the Adige basin. While the first two (Mesolcina and Bregaglia) are contiguous to the region north of the Alps, through the San Bernardino Pass, and the Septimer Pass respectively, the three last ones (Bregaglia, Poschiavo and Müstair) are contiguous to the Engadin, through the Maloja Pass, the Bernina Pass, and the Ofen Pass.

Although no large bodies of water are found in the canton, numerous mountain lakes (above 800 m elevation) dot the landscape, some of them being used as reservoirs for hydroelectricity production. The largest natural lakes are Lake Sils, Lake Silvaplana, Lago di Poschiavo and Lake St. Moritz (all in Upper Engadin except that of Poschiavo). Artificial lakes are more numerous, the largest (over 100 ha) being Lago di Livigno, Lago di Lei, Lai da Sontga Maria, Zervreilasee, Lago Bianco, Lai da Marmorera and Lägh da l'Albigna. The total number of lakes has been estimated to 600. See list of mountain lakes of Switzerland for a more exhaustive list.

Unlike other large cantons, the Grisons includes very few cities. The largest (and capital city) is Chur. It is followed by Davos, Landquart, Domat/Ems and St. Moritz, which are, however, far less populated. The canton is particularly renowned for its numerous Alpine resort towns, notably two of the aforementioned ones (Davos and St. Moritz), but also Klosters, Arosa, Lenzerheide, Disentis, Flims, Pontresina and Scuol.

The diversity of the climate of the Grisons is high and comparable to that of Switzerland. In the southernmost and lowest regions, vineyards and olives are grown,Montagne e riscaldamento globale
rsi.ch. Retrieve 7 March 2021. ("Con le temperature più alte si stanno sperimentando le coltivazioni di specie diverse. Ne testimonia quella di ulivi, zafferano e fichi d’India a San Vittore in Mesolcina.") while on the highest summits, snow is found year-round. The inner valleys, particularly the Engadin, are significantly drier than the north and south side of the Alps, being sheltered by the high mountains of the range. On the south side of the Alps, Grono is one of the top warmest places in the country with an average of 12.4 Â°C. The nationwide record temperature of was registered there. The southern valleys are also significantly wetter than the rest of the canton (1,476 mm of rain in Grono, 849 mm in Chur, and 705 mm in Scuol). The coldest places are naturally at high elevations, such as on Piz Corvatsch. The localities of the Upper Engadin are amongst the coldest inhabited regions in the country, notably Samedan with an average temperature of 2.0 Â°C. The cantonwide record-low temperature of was registered there. The low-elevation region of Chur, including the Bündner Herrschaft, experiences naturally less harsh temperatures with an average of 10.0 Â°C.

File:Maienfeld Falknis 02.JPG, Lowlands: Vineyards of the Bündner Herrschaft, at the foot of the Falknis
File:Stairs with a view.jpg, Montane zone: Val Bregaglia, at the foot of Piz Badile
File:Val Frisal.jpg, Alpine zone: Val Frisal, at the foot of Piz Durschin
File:PizBernina.jpg, Nival zone: Piz Bernina from Piz Morteratsch

The area of the Grisons is , 19.2% larger than the canton of Bern, the second largest canton. Only about a third of this is commonly regarded as productive land of which forests cover about a fifth of the total area.
The canton is almost entirely mountainous and it is the most sparsely populated region of the country. In its southeastern part lies the only official Swiss National Park. In its northern part, the mountains were formed as part of the thrust fault that was in 2008 declared a geologic UNESCO World Heritage Site, under the name Swiss Tectonic Arena Sardona. Another Biosphere Reserve is the Biosfera Val Müstair adjacent to the Swiss National Park, while Ela Nature Park is one of the regionally supported parks.

The Grisons is sometimes included in the larger region of Eastern Switzerland, together with six other cantons. The Grisons shares border with numerous regions of Europe, reflecting its cultural diversity, and is the only canton adjacent to three different countries. On the national level it shares borders with four other cantons: Uri, Glarus, St. Gallen to the northwest (essentially across the Glarus Alps) and Ticino to the west (essentially across the Gotthard Massif and the Lepontine Alps but also at the level of the plain at Roveredo). On the international level, the canton shares borders with three countries: Liechtenstein to the north, the Austrian regions of Vorarlberg and Tyrol to the northeast and the Italian regions of Trentino-South Tyrol and Lombardy to the south.

History

The deep Alpine valleys of the present-day Grisons were originally settled by the Raetians (''Rhaeti''). In Chur, archaeological evidence of settlement goes back as far as the Pfyn culture (3900-3500 BC), making the capital city of the Grisons one of the oldest settlements in Switzerland.

Most of the lands of the canton were once part of a Roman province called ''Raetia'', which was established in 15 BC. The current capital of the Grisons, Chur, was known as Curia in Roman times. The area later was part of the lands of the diocese of Chur.

In 1367 the League of God's House (''Cadi'', ''Gottes Haus'', ''Ca' di Dio'') was founded to resist the rising power of the Bishop of Chur

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