On a cliff, more than 100 meters above the River Meuse, it offers spectacular views of the town and countryside. A fortification may have stood on this spot as long ago as the fourth century, and the Bishop Prince of Liège certainly ordered the construction of a fortress on this spot in 1051, but the present structure dates to the early 19th century. It is reached from the town either by cable car or by the 408 steps cut into the hillside. The citadel plays host to a small Arms Museum and several interesting objets d'art that reveal the glorious past of this Meuse town.