Königsberg Castle
Königsberg Castle (Russian: Кёнигсбергский замок, romanized: Kyonigsbergskiy zamok, German: Königsberger Schloss) was the seat of the grand masters of the Teutonic Order and of the dukes and kings of Prussia in the city of Königsberg (since 1946 Kaliningrad, Russia). The original fortress on the site was built by the Teutonic Knights in the 1250s, then enlarged and rebuilt into a castle over the following centuries.