The 7.60 metre high platform on the Galgenberg north of the Singen district of Bohlingen has the shape of a beech leaf. This is why the observation tower is also known as the "leaf shape". It offers a panoramic view from Untersee with the island of Reichenau over the Schiener Berg to the striking volcanic mountains of the Hegau, the Hohentwiel and Hohenkrähen.