Located in the Polish town of Malbork, the 13th-century Castle of the Teutonic Order, also referred to as Malbork Castle, is a complex of castles. It is a UNESCO World Heritage Site and the largest castle in the world in terms of land area. It was first built as an Ordensburg stronghold and given the name Marienburg by the Teutonic Order, a German Catholic monastic order of crusaders. Bohemian mercenaries sold the fortress to King Casimir IV of Poland in 1457 during the Thirteen Years War, refus ... (Read More)