The Castle in Malbork was built in Prussia by the Teutonic Order as an Ordensburg. The Order named it Marienburg, literally "Mary's Castle". The town which grew around it was also named Marienburg, but since 1945 it is again, after 173 years, part of Poland and known as Malbork.
The castle is a classic example of a medieval fortress, and is the world’s largest brick gothic castle. UNESCO listed the castle and its museum as World Heritage Sites in December 1997 as Castle of the Teutonic Order in Malbork. It is one of two World Heritage Sites in the region with origins in the Teutonic Order. The other is the Medieval Town of Toruń, founded in 1231 as the site of the castle Thorn (Toruń).