"A huge dolomite rock rising up from Hotel Gellért at its base marks one of the earliest inhabited parts of Budapest . The citadel atop the hill was built by the Austrians in the mid-1800s to better control the unruly Hungarians after squashing the revolution (it was later used by German SS troops in World War II). Other monuments dot the verdant landscape atop the hill, which is now surrounded by posh residences. The walk up from the hotel is steep but worth it for the view once on high."