The Neptune Society Columbarium in San Francisco is considered a haunted location due to alleged ghost sightings and paranormal encounters by visitors and caretakers, possibly linked to the spirits of the 30,000 people interred there and those from the former Odd Fellows Cemetery that once occupied the site. Stories include reports of spirits not resting peacefully, with some sources mentioning a specific legend about a woman who lost her baby at Stow Lake near the site. Visitors and caretakers have reported experiencing ghost sightings and other paranormal phenomena within the columbarium. It is believed that the spirits of the ~30,000 people whose ashes are held within the building are present, contributing to the supernatural claims. The columbarium was built on the site of the former Odd Fellows Cemetery, and the spirits of those buried there may also be lingering on the grounds. One specific story, though not directly about the columbarium's interior, involves a mother who lost her baby at Stow Lake around a century ago. She reportedly searched for her child all night, ultimately never emerging from the lake herself. This legend is sometimes cited in discussions of the area's paranormal activity.