Trollstigen is a serpentine road in Norway. It is popularly known for its steep inclines and 11 hairpin bends. During peak season, 2,500 cars can pass through daily.
Opened by King Haakon VII in 1936, vehicles over 13m long, such as buses, are banned from travelling on the road. The road is also closed during certain times of the year due to the dangerous effect weather can have.