The Bergpark Wilhelmshöhe is one of the biggest and most beautiful in Europe and also one of the most impressive spa parks. The baroque park of Karlsaue in the centre of Kassel is almost as large as the state of Monaco, with the Flower Island Siebenbergen and the orangerie. However, Kassel is not only a place for edgy nerves, tired bones and enthusiastic walkers. At the Bugasee, in the middle of the city, one can surf, ride bicycles, swim and feel the sand beach right at the doorstep. In the Habichtswald Natural Park, cross country ski tracks and the ski lift are set into operation. From the Kassel-Calden airport, one can jump with parachutes or travel over with a hot air balloon.