The Province of West Prussia was a province of Prussia from 1773 to 1829 and from 1878 to 1919. West Prussia was established as a province of the Kingdom of Prussia in 1773, formed from Royal Prussia
The fortress Ordensburg Marienburg in Malbork, Poland. Founded in 1274 by the Teutonic Order on the river Nogat, it is the world's largest brick castle. After 1466 it served as one of several royal residences of the Polish kings, fulfilling this function until 1772.