Heidelberg Castle
The first mention of a castle in Heidelberg is in 1214, when Louis I, Duke of Bavaria of the House of Wittelsbach received it from Hohenstaufen Emperor Friedrich II. The last mention of a single castle is in 1294. In another document from 1303, two castles are mentioned for the first time:
The upper castle on Kleiner Gaisberg Mountain, near today's Hotel Molkenkur (destroyed in 1537);
The lower castle on the Jettenbühl (the present castle site).
