Witch's Castle (Glen Canyon Park ruins)

The stone ruins known locally as the Witch's Castle are located in Glen Canyon Park and are the remains of an early 20th-century city-built stone structure associated with a reservoir and park facilities. The building was later damaged by fire and its masonry shell now stands as a ruin visited by hikers and local history enthusiasts. The site is within Glen Canyon Park and is a documented feature of San Francisco city parks.