The Philadelphia Watch Case Company building in Riverside, NJ, is rumored to be haunted by ghosts and spirit orbs, though specific details of paranormal experiences are not widely documented. While the building has a rich history as a significant industrial site and was the location for the world's largest metal pocket watch case manufacturer, it has mostly stood vacant since the company closed, leading to its reputation as a potentially haunted location. The building was originally built as the Pavilion Hotel in 1852. In 1892, Theophilus Zurbrugg purchased the vacant hotel and transformed it into the Philadelphia Watch Case Company, a massive manufacturing operation for pocket watch cases. The company closed its doors in the mid-1950s as wristwatches replaced pocket watches, leading to the building's prolonged vacancy. Some sources claim the building is haunted by ghosts and spirit orbs, though specific accounts are limited. The building's long period of abandonment, beginning after the company's closure, has contributed to its eerie reputation and association with the supernatural.