The abandoned remains of "Philadelphia State Hospital," also known as "Byberry" lie dormant on the edge of Northeast Philadelphia. The hospital opened in 1903 as an overflow facility for the mentally ill.

By 1950, it grew into a campus of over 50 buildings. While in operation, Byberry had an infamous reputation for being overpopulated and understaffed, resulting in horrific living conditions. This was accompanied by patient experimentation, neglect, & mistreatment.

In 1990, Byberry was officially shut down and vacated, and many of the patients were released. There have been homeless people found squatting in the buildings. Some believe they were once patients, trying to find their way home.

Since its closing, Byberry has become an urban legend, bearing ghost stories and tales of satanic rituals throughout its underground tunnels.

Byberry is scheduled to be demolished in 2006.