The largest lake in Bavaria, which is otherwise known as the "Bavarian Sea". The lake does not have appreciable tides like a real sea, but it does have an area of 80 square kilometres, and it originated from the primeval Thetis Sea which once covered almost half of Europe.
Connects Herreninsel and Fraueninsel with Seebruck, Chieming, Gstadt, Prien/Stock, Bernau/Felden, Übersee/Feldwies
The municipality (''Gemeinde'') consists of the islands of Herrenchiemsee (Herreninsel), Frauenchiemsee and the uninhabited Krautinsel. The Chiemsee is under the protection of the international Ramsar Convention, which was founded to preserve ecologically important wetlands. Since 1954 the mudflats in the delta formed where the Tiroler Ache flows into the lake have been a protected retreat for many endangered species of waterfowl and wader.