The circular route over the Uri Alps traverses some of the most spectacular alpine scenery in Switzerland. On the route are three mountain passes – the Susten Pass, Grimsel Pass and Furka Pass – each of which marks cantonal borders. A feat of 19th-century engineering, the road twists and turns, makes tightly winding ascents and descents, crosses bridges over dramatically plunging valleys, and passes through tunnels cut into the rock. All along the route are spectacular views of snow-capped mountains, majestic glaciers and beautiful mountain lakes.