Reserve Mountain Shash - part of the Danube-Ipolskogo National Park. The area of ​​30 acres (120,000 m2) on top of the hill was taken under protection in 1958. It was one of the first reserves in Hungary. First of all the state and society were concerned about its unique landscape of limestone rocks, as well as a special flora and fauna. From the top of the hill (altitude 257 m) offers a breathtaking panorama on Budsky Castle, the Gellert Hill and urban areas. Park Service supports the Centre for visitors and the ring railway length 2350 m, which introduces visitors to the most important natural attractions of the reserve.