Schwetzingen is a German town in northwest Baden-Württemberg, around 10 km southwest of Heidelberg and 15 km southeast of Mannheim.
Schwetzingen is one of the five biggest cities of the Rhein-Neckar-Kreis district and a medium-sized centre between Heidelberg and Mannheim.
The city is most famous for Schwetzingen Palace and the Schlosstheater. The palace grounds also feature a mosque, the oldest in Germany. Although not functional, it was used by Muslim prisoners in the Franco-Prussian War.
Wikipedia https://en.wikipedia.org/wiki/Schwetzingen
Coordinates 49°22'59.85" N 8°34'24.648" E