• Little natural shade on the beach, so bring a sun umbrella or set up under the bigger trees back from the water
• No lifeguard on duty: the Wasserwacht water rescue team only patrols on weekends and holidays in good bathing weather
• Few parking spaces near the lake, so take the U2 to Messestadt Ost or Messestadt West, or come by bike

Riemer See is a swimming lake dug for the 2005 federal garden show, which is why locals also call it Bugasee. It is about 700 meters long, up to 18 meters deep, and one of the cleanest lakes around.

Families head for the east shore, where a wide gravel beach runs into a big lawn. A playground sits on the north shore, plus swings and three volleyball courts.