The Citadella at the top of Gellért Hill is a strategic point from where you can get wonderful, panoramic views over both Buda and Pest. It can be reached by public bus, but is also a stopover on the hop-on, hop-off tour bus. The fortress of the Citadel was built by the Habsburgs in 1851 to demonstrate their control over the Hungarians. In the mid 20th century it was converted to a tourist center. Just a short walk will take you to the Liberation (Gellert) Monument.