The Inn is an important river in the Alps, flowing through Switzerland, Austria and Germany. Its source is in the Upper Engadine in the canton of Graubünden. It flows through impressive mountain landscapes into the Lower Engadine. The Engadin is known for its beautiful nature and charming villages. Popular leisure activities on the Inn include rafting and kayaking, which are very popular due to the varied river sections. The Inn continues its journey through Austria and Germany, flowing into the Danube at Passau after a total of 517 km.