The principle aim of the House of Terror Museum is to document two bloody eras in Hungarian history, the Hungarian Nazi (Arrow Cross) and the 1950′s totalitarian Communist regimes. The building itself is the block that once was the headquarters of the Arrow Cross Party (Nyilaskeresztes Párt) and later of the infamous State Security Police (Államvédelmi Hatóság).
(source: www.hungarystartshere.com)