Chiemgau is the common name of a geographic area in Upper Bavaria.
It refers to the foothills of the Alps between the rivers Inn and Traun, with the Chiemsee at its center.
Chiemsee is a freshwater lake in Bavaria, Germany, near Rosenheim. It is often called "the Bavarian Sea".
The Chiemsee is divided into the bigger, north section, in the northeast, called Weitsee, and the Inselsee, in the southwest.
The Chiemgau, the region surrounding the Chiemsee, is a famous recreation area.