Lake Walchensee in autumn. Walchensee (lake) is one of the few untouched lakes in the Bavarian alps with shores that are freely accessible everywhere. One can walk anywhere around it and the lake is entirely free of pollution and the noise of motor boats. The thinly settled shores offer largely natural bathing beaches, especially to the south and east. Fish in the pure waters attract numerous anglers and favorable wind conditions make the lake attractive for surfers and yachtsmen.