The Königsberg Cathedral is the most important surviving Gothic building in Kaliningrad and one of the finest brick Gothic churches on the entire Baltic coast. Built between 1333 and 1380, it sits on Kant Island (Kneiphof Island) in the Pregel River, where the old city once stood thickest. The surrounding streets were obliterated in 1944 and never rebuilt, leaving the cathedral isolated on its island in a strange kind of open-air ruin-scape that has been gradually greened into a park.
The cathedral itself was a ruin until the 1990s, when reconstruction began. The interior has been carefully restored and now functions as a concert hall and museum. The main hall is impressively large, with the tall nave and characteristic amber-coloured brick of the region. The tomb of Immanuel Kant is on the northern side, under a simple neoclassical canopy that contrasts with the medieval Gothic around it. A small museum within the cathedral covers the history of both the building and the city it represents.