Traunsee is a beautiful lake in Salzkammergut, Upper Austria, Austria. At the North end of the lake is Gmunden, at the south end is Ebensee town. The lake is surrounded by mountains, including the Traunstein, and a number of other towns and villages surround the lake, including Altmunster and Traunkirchen. Stand up paddle boarding, also known as SUP, is a popular water sport activity that involves standing up on a board and using a paddle to make your way through the water.