Gellert Hill Cave is famous for having a church in it that was built in the 1920s by monks, and served as a consecrated church until it was closed by the communist dictatorship in 1951, and reopened in 1989 after the fall of communism where the monks continue to work there today, and it is easy to find the cave where The entrance is located right at the foot of the hill next to the famous Gellért hotel and the thermal baths.