Radzyń Chełmiński is located far from the big cities of Poland and is 15 km (9.32 Mlies) from Grudziądz in Cuiavian-Pomeranian Voivodeship. Near the castle there is a small town with about 2,000 citizens. It is known as one of the most beautiful ruined castles in Poland. The castle was built in a square formation, characteristic of the Teutonic Knight's Commanderies’ style. It is located on a small hill near Castle Lake. The castle is one of the oldest built by the Teutonic Knights in this region, and also one of the biggest. Malbork is the only castle in the territory of Poland that is bigger than Radzyń castle. The castle was once used for the safekeeping of treasure and
