Citadel
The Nazis used the Citadel as an anti-aircraft position during the II. Work War, and the Communist regime used it as a military position as well, and later they erected a monument, that would remind the locals of the sacrifice made by the Eastern liberators who freed the city from the German invaders. The Citadel was the symbol of foreign oppression for long time, but after 1990 the building left the dark past behind: nowadays the Citadel is a popular meeting point, one of the best spots to take pictures about Budapest, and the symbol of the hard-earned liberty of Hungary.