Offensee is a lake located at the western end of the Totes Gebirge mountain range in Upper Austria’s part of the Salzkammergut.

Salzkammergut is an Austrian region of lakes and Alpine ranges near Salzburg. In the south, the pastel houses of Hallstatt crowd the shore of Lake Hallstatt, which is ringed by mountains. Above town, exhibits at Salzwelten illuminate an underground salt mine’s thousands of years of history. Natural ice formations fill the Ice Cave on Dachstein Mountain. Nearby, 5 Fingers lookout offers sweeping lake and Alpine views.