Budapest Citadella
The Citadella fortress was erected in 1851 by the Habsburgs to control the city and prevent a repeat of 1848-49 Hungarian revolution. During the 1944-45 siege the German troops used the Citadella as an air-raid bunker. Today the Citadel serves as a look-out terrace. 14-meter tall Liberation Monument, which can be seen from almost any point of the city, honors those who laid down their lives for Hungary's prosperity.