Frankfurt Rhine-MainThe Rhine-Main Metropolitan Region, often simply referred to as Frankfurt Rhine-Main, Frankfurt Rhine-Main area or Rhine-Main area (German: Rhein-Main-Gebiet, Frankfurt/Rhein-Main or FrankfurtRheinMain, abbreviated FRM), is the third-largest metropolitan region in Germany after Rhine-Ruhr and Berlin-Brandenburg, with a total population exceeding 5.9 million.
HesseHesse or Hessen (German pronunciation: [ˈhɛsn̩]), officially the State of Hesse (German: Land Hessen), is a landlocked state in Germany. Its capital city is Wiesbaden, and the largest urban area is Frankfurt am Main, which is also the country's principal financial centre. Two other major historic cities are Darmstadt and Kassel.
Main (river)The Main (German pronunciation:) is the longest tributary of the Rhine, one of the major European rivers. It rises as the White Main in the Fichtel Mountains of northeastern Bavaria and flows west through central Germany for 525 kilometres (326 mi) to meet the Rhine below Rüsselsheim, Hesse. The cities of Mainz and Wiesbaden are close to the confluence. The largest cities on the Main are Frankfurt am Main, Offenbach am Main and Würzburg.
Hanau HauptbahnhofHanau Hauptbahnhof is a railway station in Hanau in the German state of Hesse, and is a major railway junction east of Frankfurt am Main. It was opened in 1867, but the current building was built in the late 1960s. It is located about 1.5 kilometres (0.93 mi) south-east of central Hanau. It is classified by Deutsche Bahn (DB) as a category 2 station and has many train services, including Intercity Express, regional and S-Bahn services.
HeraeusHeraeus is a German technology group with a focus on precious and special metals, medical technology, quartz glass and sensors as well as electronic components. Founded in Hanau in 1851, the company is one of the largest family-owned companies in Germany in terms of revenue. Heraeus employs 16,400 people in 40 countries and generated a total revenue of €25.6 billion in 2023. The headquarters and head office are in Hanau, Germany.
FrankfurtLargest city in Hesse, GermanyCity in Hesse, GermanyFrankfurt am Main, usually shortened to Frankfurt, is the most populous city in the German state of Hesse. Its 778,589 inhabitants as of 2025 make it the fifth-most populous city in Germany. Located in the foreland of the Taunus on its namesake river Main, the city forms a continuous conurbation with Offenbach; its urban area has a population of more than 2.7 million.
GermanyCountry in EuropeGermany, officially the Federal Republic of Germany, is a country in Western and Central Europe. It lies between the Baltic Sea and the North Sea to the north with the Alps to the south. Its 16 constituent states have a total population of over 83 million, making it the most populous member state of the European Union (EU).Main-Kinzig-KreisMain-Kinzig-Kreis is a district in Hesse, Germany. Neighboring districts are Wetteraukreis, Vogelsbergkreis, Fulda, Bad Kissingen in Hesse and Main-Spessart and Aschaffenburg in Bavaria. The district-free cities of Offenbach, Frankfurt, and Hanau (since 2026) also border the district.
Franciscus SylviusFranciscus Sylvius (Dutch:, Ecclesiastical Latin:; born Franz de le Boë;Dutch pronunciation: 15 March 1614 – 19 November 1672) was a Dutchphysician and scientist (chemist, physiologist and anatomist) who was an early champion of Descartes', Van Helmont's and William Harvey's work and theories.
CityA city is a human settlement of a substantial size. The term "city" has different meanings around the world and in some places the settlement can be very small. Even where the term is limited to larger settlements, there is no universally agreed definition of the lower numerical boundary for their size.
Brothers GrimmBrother duo of German academics and folkloristsWilhelm Grimm (left) and Jacob Grimm, depicted by Elisabeth Jerichau-Baumann (1855).The Brothers Grimm (German: die Brüder Grimm or die Gebrüder Grimm), Jacob (1785–1863) and Wilhelm (1786–1859), were German academics, linguists, cultural researchers, and authors whose work in folklore, linguistics, and literary scholarship shaped the development of modern folkloristics and the study of the German language.
Precious metalPrecious metals are rare, naturally occurring metallicminerals of high economic value. Precious metals, particularly the noble metals, are more corrosion resistant and less chemically reactive than most elements. They are usually ductile and have a high lustre. Historically, precious metals were important as currency but they are now regarded mainly as investment and industrial raw materials. Gold, silver, platinum, and palladium each have an ISO 4217 currency code.*As an Amazon Associate I earn from qualifying purchases.