Terror Behind the Walls is a seasonal haunted house inside a real former prison

Terror Behind the Walls is a haunted attraction that runs during October at Eastern State Penitentiary in Philadelphia. The experience takes you through cellblocks, tunnels, and yards of the actual prison building, which closed in 1971 after operating for nearly 150 years. Actors in costume portray inmates, guards, and other characters tied to the prison's real history, and the attraction uses the prison's genuine architecture and isolation to create the atmosphere.

The attraction is not a traditional haunted house with separate rooms in a single building. Instead, you move through the actual penitentiary grounds — outdoors and indoors — following a path that the attraction designers have set up. The experience typically takes 45 minutes to an hour, though the exact route and length can vary depending on crowd flow and which themed areas are active that season.

Eastern State Penitentiary itself is a National Historic Landmark. The building is genuinely old, genuinely cold in October, and genuinely maze-like if you do not know where you are going. That physical reality is part of what makes the attraction work — you are not in a purpose-built set, you are in an actual place where people were incarcerated.

Key Takeaways

  • Terror Behind the Walls runs only during October at Eastern State Penitentiary in Philadelphia and requires a separate ticket from daytime prison tours.
  • The experience takes place throughout the actual prison building and grounds, including cellblocks, tunnels, and outdoor yards, so expect to walk on uneven surfaces and climb stairs.
  • Actors are stationed throughout the route to interact with visitors, and the attraction uses sound, lighting, and the prison's real architecture to create the haunted atmosphere.
  • The attraction is not recommended for children under 13, and visitors with mobility issues should know that the route includes stairs, narrow passages, and outdoor terrain.

When Terror Behind the Walls runs and how to get tickets

The attraction operates during October only, typically opening in early October and running through the end of the month. Hours vary — some nights it runs from early evening through late night, while others may have limited hours. You should check the Eastern State Penitentiary website or call ahead to confirm the exact dates and hours for the year you plan to visit, as the schedule changes annually.

Tickets are sold separately from daytime prison tours. You can purchase them online through the penitentiary's website or at the gate on the night of your visit, though online purchase is usually faster and sometimes cheaper. Ticket prices vary by date — weekend nights and dates closer to Halloween typically cost more than early-October weeknights. Advance purchase is recommended, especially for October weekends, because the attraction does sell out.

The penitentiary is located at 2027 Fairmount Avenue in Philadelphia. Parking is available on the street and in nearby lots, though street parking can be difficult on busy nights. Public transit options include SEPTA buses and the subway system if you prefer not to drive.

What the physical experience involves

You will walk through multiple areas of the actual prison building and grounds. The route typically includes cellblocks where inmates were housed, administrative areas, the dining hall, and outdoor sections of the yard. Some years the attraction adds themed zones — for example, a section focused on a particular era of the prison's history or a specific type of scare scenario. The exact path can change from year to year.

The terrain is uneven and sometimes steep. You will climb stairs, walk through narrow passages, and navigate outdoor ground that may be wet or muddy depending on weather. The building is old and not climate-controlled, so October temperatures inside can be cold, especially in underground sections. Wear comfortable shoes with good grip and bring a jacket. The attraction does not provide lighting for visitors — you move through dimly lit or dark areas, and actors use lighting effects as part of the scare.

The experience is designed to be startling but not physically dangerous. Actors will not touch you, though they may come very close or move suddenly. If you have a strong startle reflex, anxiety in dark spaces, or claustrophobia, you should consider whether this attraction is right for you. The penitentiary offers a daytime tour if you want to see the building without the haunted-house element.

Who should and should not attend

Terror Behind the Walls is marketed for ages 13 and up. Children under 13 may find it too intense, and the physical demands of the walk — stairs, uneven ground, long duration — can be tiring for very young visitors. There is no official age restriction, but the penitentiary recommends parental judgment for anyone under 13.

If you have mobility issues, you should know that the route includes stairs and is not fully wheelchair accessible. The penitentiary does offer a daytime tour with wheelchair access to certain areas, but Terror Behind the Walls does not follow the same accessible route. Contact the penitentiary directly if you have specific mobility concerns and want to know what parts of the attraction you could navigate.

If you are pregnant, have heart conditions, or have been advised by a doctor to avoid sudden scares or strenuous walking, this attraction may not be appropriate for you. The combination of darkness, unexpected actors, loud sounds, and physical exertion can be demanding.

How the attraction uses the prison's real history

Eastern State Penitentiary was one of the first prisons in America to use solitary confinement as its primary punishment method. Inmates spent 23 hours a day alone in their cells, with only one hour for exercise. The building's design — long cellblocks radiating from a central rotunda — was copied by prisons around the world. Famous inmates included Al Capone and Willie Sutton.

Terror Behind the Walls incorporates this real history into the scare experience. Actors portray inmates, guards, and other figures connected to the prison's actual past. Some scenarios are based on documented events or conditions at the prison, while others are fictional horror scenarios set within the real building. The attraction does not glorify the prison or make light of the real suffering that occurred there — it uses the building's genuine history as the foundation for the haunted-house experience.

If you are interested in the prison's actual history beyond the haunted attraction, the penitentiary offers daytime tours that focus on the building's architecture, the history of incarceration, and specific inmates and events. These tours are educational and do not include actors or scares.

What to bring and how to prepare

Wear comfortable, closed-toe shoes with good traction. The ground is uneven, and you will be walking for nearly an hour. Bring a jacket or sweatshirt — the building is cold, and you will be outdoors for part of the route. Avoid wearing anything you do not want to get dirty, as the ground can be muddy.

Leave your phone in your pocket or bag unless you plan to take photos. The attraction is dark, and using your phone's light will disrupt the experience for other visitors and for the actors. Some areas may not allow photography — check the rules when you arrive.

Arrive early if you purchased tickets in advance, as there may be a check-in process. If you are sensitive to strobe lights or loud sounds, let staff know when you arrive — they may be able to note this for the actors or suggest which sections to avoid. Eat something before you go, as the experience is physically demanding and there is no food service during the attraction itself.

Frequently Asked Questions

Can I bring children under 13?

There is no strict age cutoff, but the penitentiary recommends the attraction for ages 13 and up. Younger children may find the darkness, sudden scares, and loud sounds too intense. If you bring a child under 13, you are responsible for deciding whether they can handle it. Consider your child's sensitivity to scares and their comfort with dark spaces.

How long does the experience last?

Most visitors spend 45 minutes to an hour going through the attraction. The exact time depends on crowd size and how long you spend in each area. If the attraction is very crowded, you may move more slowly. If it is less busy, you may move faster.

Is the attraction indoors, outdoors, or both?

Both. You will walk through indoor cellblocks and tunnels as well as outdoor sections of the prison yard and grounds. Expect to be cold and possibly wet depending on weather. Bring a jacket and wear shoes with good grip.

What if I get too scared and want to leave?

You can leave at any time. Let a staff member know, and they will direct you to an exit. You will not receive a refund, but your safety and comfort come first. There is no shame in deciding the experience is not for you.

Do actors touch visitors?

No. Actors will not physically touch you, though they may move close to you or appear suddenly. If you have a strong startle reflex or anxiety around sudden movements, be prepared for that element of the experience.