Out of Italy's 55 heritage sites, five are shared with other countries: Monte San Giorgio and Rhaetian Railway in the Albula / Bernina Landscapes with Switzerland; Historic Centre of Rome with the Vatican; Prehistoric pile dwellings around the Alps with Austria, France, Germany, Slovenia and Switzerland; and with Croatia and Montenegro. Six World Heritage Sites in Italy are of the natural type, while all others are cultural sites (49). Therefore, Italy has the largest number of world cultural heritage sites.