Adlisberg, with an elevation of 701 metres (2,300 ft), is a wooded mountain in Switzerland overlooking Zürichsee (Lake Zürich) to the northwest near the Zürichberg.
Nearby, on the hilltop, sport courts are situated, among them a popular wave pool (Wellenbad Dolder), a mini-golf course,[1] a Curling hall, tennis clubs, a driving range, and the Dolder ice rink, built in 1930 and considered to be one of the largest artificial ice rinks in Europe.
On the northeastern side of the Adlisberg the ruins of the Dübelstein castle are situated; from 1487 to 1489 the home of Hans Waldmann, former mayor of the city of Zürich.
Sigmund Widmer, then Stadtpräsident (mayor) of the city of Zürich, in 1971 initiated the plans for the satellite town Waldstatt (also called Sigi-Ville) for about 100,000 inhabitants, comprising an area of about 4.5 square kilometres (2 sq mi) on the Adlisberg hill plateau.
In addition to 30,000 relatively inexpensive housing, 230 classrooms, 10 double gyms, swimming pools, shops, cinemas, churches, a hospital, hotels, a convention center and theater, as well as a subway and underground motorway connections were planned.