Stelvio National Park, Italy
It is one of the most popular regions for high altitude tours. At 2,760 meters (9,055 ft), the Stelvio is the highest mountain pass in Italy, with dozens of serpentine bends. If you dare, turn onto one of the old military trails, which are now used as bike trails. They lead over scree fields, through high valleys and past mountain lakes. One of the most famous is the Goldsee Trail.