Getting ready for the new war with the Kingdom of Poland, the castle was surrounded by a moat. The moat was filled with water. The moat was filled in with soil in the eighteenth century. The access point from the east of the castle was by a bascule bridge, which led to a granite gate. The village surrounding the castle served means for keeping storage, brewery and a forge. In the Battle of Grunwald the castle was used to support the defence against the Polish army. The castle became greatly diminished in the nineteenth and twentieth centuries. During World War II the castle was burned down by the Wehrmacht Army. The castle's reconstruction began in 1974. Currently, the castle houses a gallery, library and a museum.