There are also many lakes around Berlin, the best-known of which is Wannsee. A fine sandy beach 1,200 meters (3,937 ft) long makes you feel like you're at the seaside. And that feeling is not so wrong, because part of the sand on the beach here came from the Baltic Sea coast. Wannsee's bathing beach offers space for up to 50,000 bathers. Even so, it quickly gets very crowded in summer.