The almost completely preserved medieval city wall of Chojna is now a listed building. Königsberg/Neumark received city fortifications in the 14th and 15th centuries. This was supplemented by 3 gates and numerous defensive and watchtowers. Despite significant war damage in World War II, the city wall in Chojna remained almost completely intact. Two goals remained until our time. One, the Bernikower Tor, got its name from the village of Berniko. It was created in the 14th and 15th centuries. The second preserved gate is the Schwedter Tor, Brama Swiecka, built in the 15th century and is considered one of the most beautiful Gothic city gates in the country. The city fortifications included numerous towers, three of which have been preserved: Baszcza Piekarska, Więzienna and Bociania (baker, prison and stork tower). The Billerbeck Tower, which was also called the prison or powder tower, is located on the northern city wall.