is a town in the north west of the state of
Baden-Württemberg in
Germany with 43,000 inhabitants, approximately north of
Heidelberg and northeast of
Mannheim. Together with these cities, it makes up the
Rhine-Neckar triangle. It has the nickname "Zwei-Burgen-Stadt", or Two-Castle city ('Burg' means 'fortress'), named after the two fortresses on the hill overlooking the town in the east on the edge of the
Odenwald, the
Windeck and the
Wachenburg. The city of Weinheim with said Wachenburg castle, built by
German Student Corps fraternities in the early 1900s, is the location of the annual convention of the
Weinheimer Senioren-Convent.