San Francisco City Hall is described as a haunted location due to its history with the city's first municipal graveyard and the 1978 murders of Mayor George Moscone and Supervisor Harvey Milk. Reported paranormal activity includes disembodied voices and footsteps, rattling chairs, and faucets turning on and off. Some activity, such as an unusual series of knocks, has been attributed to the ghost of a former employee or even the lingering spirits of the slain politicians. The building is located next to the site of the city's first municipal graveyard, which was established in 1850 and remained in place until the late 1860s. Mayor George Moscone and Supervisor Harvey Milk: The 1978 assassination of these two prominent figures in City Hall is a common source of attribution for the building's spooky occurrences. Employees and visitors have reported hearing voices and footsteps when no one is present. There are accounts of office chairs rattling in empty rooms, bathroom faucets turning on by themselves, and even a metal detector on Polk Street activating with no one around. The "Punctual Ghost": In 1924, a series of five raps followed by three more raps was heard coming from the walls around noon, a phenomenon that has been attributed to a ghost. Some individuals claim to have felt a poke on their back, even when no one was there.