The Ehrenbreitstein Fortress sits atop a mountain with the same name. The fortress was built on the mountain top between the years of 1817 and 1828 by Prussian forces, though another fortress had stood on this same spot until 1801 when it was destroyed by the French. Of course, early people had also seen the benefits of building on top of the impressive Ehrenbreitstein mountain; some archaeologists believe that structures may have been built on this same site as early as the 9th-Century BC. The fortress that visitors can see today was never attacked while the Prussian military owned it. It was, however, occupied by U.S. troops during the Occupation of the Rhineland. Having escaped destruction in World War II, the fortress served as a variety of establishments before being made into a museum in 1956. Visitors can take a cable car up to the fortress where they can wander around the grounds and explore the many rooms on docent-led tours.