The Province of Turin is a province in the Piedmont region of Italy. There are 315 comuni forming the province, the most of any province in Italy. Various landscapes characterize this province, with many nature reserves, such as Sacro Monte Natural Reserve and Gran Paradiso National Park. Among the UNESCO's World Heritage Sites of Turin,The Residences of the Royal House of Savoy and the neighborhood are on the list. The Shroud of Turin is also found in this province. The royal chapel of the Cathedral of Saint John the Baptist is among Italy's most visited sites, because this is the place where the famous Shroud of Turin is being kept.