I love Hamburgand one reason is all the unexpected nature oases this city offers. Boberger See is…read moredefinitely one such place! There is surprisingly a huge sand dune in the middle of the nature reserve, a swimming pond/lake and an airport for gliding planes. We sat there and watched the planes take off and land while drinking a cup of coffee at the little kiosk (Wieners, meatballs and ice-cream were also available) . It's fairly central, parking is easy and the paths are extensive.