On, in and around the Groß-Glienicke Lake you can

go canoeing ...

... fishing ...

... swimming

(100m away from the vacation home) ...

... playing tennis, squash or badminton in the nearby sport center ...

... or bicycling on the former border area ...

... to the Heilands Church in the palace-garden at Castle Sacrow for example ...

... or to the air force museum on the other side of the lake.