Bunker of Arpad Line is a defensive military object of the Second World War period. It was dug inside the mountain, at the depth of 55 m. The length of its tunnels is almost 800 m.
During the war the bunker served as a hospital, a warehouse of products and ammunition. There is also a source of clean drinking water here.
Now the bunker attracts tourists, and here sightseeing tours are available.