The Citadel of Liège was the central fortification of the strategic Belgian city of Liège until the end of the 19th century. It is located in the Sainte-Walburge neighborhood, 111 metres (364 ft) above the Meuse valley. The first citadel was built on the heights overlooking the city in 1255. It was rebuilt in a pentagonal shape by Prince-Bishop Maximilian Henry of Bavaria in 1650.