The eastern part of the Altnau bathing beach is used as a "dog beach". Access is free and there is a kiosk in the harbour building. There is also a restaurant with terrace and a wonderful view of the lake.
The dog beach is separated from the bathing area with large, rammed logs all the way out into the lake.
Parking spaces are available. By public transport: Lake Constance boat trip to Altnau station.
Or train or bus to Altnau. The Badi can be reached on foot in a few minutes.