Standout Playgrounds in Zurich, 15 of 15: Wildnispark Zürich Sihlwald

Sihlwald is a beech forest along the Sihl river that has been left unmanaged since 2000, and at 970 hectares it is the largest natural forest reserve on the Swiss Central Plateau.
By the visitor center, a wilderness playground has branch nests, rope bridges, a hollow fir trunk to crawl into and a water play fountain. Fire pits and a 2.6 km forest adventure trail start there.