Sziklakórház (Sziklakórház és Atombunker) is a history museum, located at Budapest, Lovas út 4/c., 1012, Magyarország. They can be contacted via phone at +36 70 701 0101, visit their website www.sziklakorhaz.eu for more detailed information.
Highly recommended, interesting exhibition with detailed explanations.
Great tour even with English commentary. I definitely recommend it.