Müggelsee is the largest of the Berlin lakes (7.4 km²; 4.3 km long, 2.6 km broad). Some call it "Großer Müggelsee" because there is the "Kleiner Müggelsee", which is only 0.16 km². The lake is in the Berlin district of Treptow-Köpenick. The suburbs of Friedrichshagen, Rahnsdorf and Müggelheim border on the la...