Obersee

Super clear water with a nice swimming area.

clean, small beach. There are even toilets

Great place for a break.

Fish sandwich and a break at the lake

The north bank can be driven on, but there are a lot of pedestrians on the way. The main street runs along the south bank.
The lake has several smaller and one large bathing area (the latter with a jetty and sandy beach), a delicious small fish restaurant and a playground.
The traffic noise from the motorway that crosses the lake at the western end only spoils the experience minimally.