Ready for a vacation—with all the trimmings? Sand between your toes, a cool drink in your hand, lounge chairs, and that authentic beach vibe? Then you don’t have to settle for just idyllic green oases and blooming rose gardens in the city. All around Berlin, there are places that give you that real vacation feeling and let you forget for a moment that you haven’t even left the region. In addition to the new exclusive beach area at Halensee, there’s another hidden gem for hot summer days: Bernsteinsee near Ruhlsdorf in the municipality of Marienwerder in the Barnim district is one of the most beautiful swimming lakes in the Berlin area and entices visitors with clear water, a sandy beach, and a relaxed vacation atmosphere.

Bernsteinsee is particularly popular because of its several expansive sandy beaches. Unlike at many other swimming lakes in the region, you can usually still find enough space here for a towel or a picnic, even on hot summer days. The clear water is perfect for swimming, while thesurrounding pine and mixed forests provide shade and a pleasant atmosphere.
With a depth of up to 25 meters and a typical visibility depth of around two meters, Bernsteinsee is one of the region’s clearest gravel lakes. The water quality is considered excellent, making the lake a popular destination in the summer. In addition to several swimming spots, Bernsteinsee features a large sandy beach. Those looking to get active will find five beach volleyball courts, two table tennis tables, and other recreational and sports facilities at the beach.
If you’d like to do more than just swim, you can take the roughly one-hour loop trail around the lake. The trail winds through wooded sections and along various stretches of the shore, offering beautiful views of the water at every turn. The southern shore, in particular, is considered one of the most idyllic parts of the lake and is perfect for a break to take a dip.

Bernsteinsee is not only a popular swimming lake but also a geologically interesting body of water. It was formed from a former gravel pit that filled with groundwater after mining operations ceased. As a result, the lake has relatively steeply sloping shores in many places and exceptionally good water quality, which gives the water its clear, blue-green color .
The lake is surrounded by extensive wooded areas that create a pleasant microclimate , especially on hot summer days. Unlike many heavily visited swimming lakes, there are no dense developments directly on the shore here, which is why the natural landscape has been largely preserved. As a result, Bernsteinsee feels significantly quieter and closer to nature than many other destinations in the Berlin area.