Wülzburg is a historical fortress of the Renaissance-age in Germany. It is about 2 kilometres east of the center of Weißenburg in Bayern. It stands on a hill 200 metres above Weißenburg, at an elevation of 630.5 metres, and was originally a Benedictine monastery dating from the 11th century.
It is one of the best-preserved Renaissance fortresses in Germany. Today it is as Ortsteil a part of the city of Weißenburg. It was converted into a fortress from 1588 to 1605 by George Frederick, Margrave of Brandenburg-Ansbach.
In the 19th century it was an garrison of the Bavarian Army. During World War I, Charles DeGaulle was imprisoned at the Wülzburg. The Nazis also used it as a prison camp during World War II; it was here that the Czech composer Erwin Schulhoff was held for over a year before he died of TB. After the war it was a refugee camp.