This ferry plies Maschsee - the artificial lake - from Easter to October in good weather, and there are sailing, pedal and rowing boats for hire. This artificial lake, built by the unemployed in one of the earliest Nazi-led public works projects, is now a favourite spot for boating and swimming. It's certainly the most central at just half an hour's walk away; otherwise take bus 131 to Sprengelmuseum/Maschsee.