By CBS3 Staff

PHILADELPHIA (CBS) — Philadelphia’s Eastern State Penitentiary is gearing up for the Halloween season. Halloween Nights at the penitentiary opens on Friday.

Organizers say it’s a “bold revamp” of the Terror Behind the Walls celebration the penitentiary is known for.

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In all, there are 15 attractions, including two haunted houses.

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“Halloween Nights transforms the abandoned cell blocks and courtyards into an immersive, interactive environment and activates the historic stone architecture with large-scale video projections and other special effects,” Brett Bertolino said.

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Halloween Nights spans the penitentiary’s entire 10-acre property, and several sections are open to the public for the first time.