Citadella is a must-see part of a journey in Budapest. This spectacle at the top of Gellert hill is a fortress that has never known struggles. It was built by the Habsburgs after the independence war of 1848-9 to defend the city from other insurrections. Later, the political climate changed, making the fortress obsolete. Today, the Citadella hosts some weapons and a war museum situated in a large air-raid shelter from WWII. It houses wax statues and a large exhibition with wartime photographs of Budapest. The bunker has three floors and 17 rooms. Enjoy the great view from the top of the hill over the city, the Danube and its eight bridges.