Berlin, BE
Do There's a paying beach with a beer garden and also free picnic spots on the grass. Lots of people go naked. In 2010 the paying beach was closed because the water needed to be protected from run-off from the highway, according to EU law.

People swim in the lake anyway and work is being done to solve the problem.

The lake has a really nice sandy bottom. Dogs are supposed to be forbidden, but you see one or two anyway.

The highway is nearby and you hear traffic noise. The grass is pretty clean, people do a good job taking away their trash. You usually get an ice-cream vendor at some point in the afternoon.

S41/S42/S46 Halensee, Bus 19, 29, 104