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

Offensee
Offensee
Location of the lake in Upper Austria.
Location of the lake in Upper Austria.
Offensee
LocationUpper Austria
Coordinates47°45′N 13°50′E / 47.750°N 13.833°E / 47.750; 13.833
Typelake