The Idaho State Penitentiary in Boise isn’t just a relic of the past—it’s one of the most haunted prisons in the United States. Built in 1870, this historic site has witnessed numerous executions, riots, and harsh living conditions, leaving behind a chilling paranormal legacy.
Today, the Penitentiary is a prime destination for ghost hunters and history enthusiasts alike, offering ghost tours that take visitors through its eerie cell blocks and execution chambers.
History of the Idaho State Penitentiary
Construction and Early Years
The Idaho State Penitentiary, established in 1870, making it one of the oldest penitentiaries in the Western U.S. Originally a simple territorial prison, it housed the most dangerous criminals of the era. Over its 101-year operation, the prison expanded to include solitary confinement cells, a death row, and an execution room.
- Who built the prison? The penitentiary was constructed under the direction of the U.S. government as part of Idaho’s territorial infrastructure.
- What was the purpose of the prison? The facility housed criminals convicted of serious crimes, from theft to murder.
Significant Events
Throughout its operation, the Idaho State Penitentiary saw a number of grim events, including multiple inmate riot. As well as, a major one in 1971 that contributed to its eventual closure. The execution of prisoners by hanging and the poor conditions of solitary confinement also contributed to the site’s haunted reputation.
- How many executions were carried out? The prison executed a total of ten prisoners.
- What led to the closure? After the 1971 riot, the prison was deemed outdated and inhumane, leading to its closure in 1973.

Paranormal Activity
Notable Hauntings
The most notorious spirits at the Idaho State Penitentiary are believed to be those of the inmates who met violent or tragic ends. Many visitors have reported seeing ghostly figures, hearing disembodied voices, and feeling sudden cold spots throughout the prison, especially near Death Row and the solitary confinement cells.
- Where are these hauntings most common? The strongest paranormal activity is often reported near Cell Block 4, which housed the most dangerous inmates, and in the Execution Chamber.
Eyewitness Accounts
Visitors and tour guides alike have shared stories of eerie footsteps, mysterious shadows, and ghostly whispers in the empty halls of one of the oldest haunted prisons. Some have even reported being touched or shoved by unseen forces during tours.
- When are the hauntings most likely to happen? Most paranormal experiences are reported during evening tours or late-night investigations.
Visitor Experiences
Ghost Tours and Paranormal Investigations
The Idaho State Penitentiary offers both guided ghost tours and paranormal investigations for those brave enough to explore its haunted halls. Visitors can roam through the old cell blocks and hear about the prisoners who spent their last days here.
Special events, like overnight ghost hunts, allow participants to bring their own ghost-hunting equipment and try to document the eerie happenings for themselves.

Commonly Reported Phenomena
Among the most frequently reported paranormal activity are phantom footsteps, strange orbs of light, and the unnerving sensation of being watched.
Some guests claim to have captured EVPs (Electronic Voice Phenomena) or ghostly apparitions in photographs.
- Why do visitors return to the site? Many come back for the thrill of encountering spirits as well as to experience the unsettling energy that lingers in the prison’s walls.
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Investigation Reports
Equipment Used
During paranormal investigations, teams use tools like EMF meters, thermal cameras, and EVP recorders to track and document supernatural phenomena.
The Penitentiary’s stone walls are believed to hold residual energy, therefore making it an ideal site for ghost hunters.
Analysis of Findings
Reports often include recordings of ghostly voices, sudden drops in temperature, and visual sightings of shadowy figures moving across cell blocks.
The consensus among investigators is that the Penitentiary is highly active with spirits, especially in the areas where violence and death occurred.
FAQ About Idaho State Penitentiary Ghost Tours
- Where is the Idaho State Penitentiary located?
The Penitentiary is located at 2445 Old Penitentiary Rd, Boise, ID 83712. - Can I visit the prison for a ghost tour?
Yes! The Penitentiary offers ghost tours and paranormal investigations. Check their official website for the latest schedule and ticket information. - Is it safe to participate in a ghost tour?
Yes, the tours are safe. However, participants should be prepared for potential paranormal encounters. - What should I bring to a ghost tour or investigation?
Bring comfortable shoes, a flashlight, and ghost-hunting tools like EMF meters if you’re participating in an overnight investigation.
Haunted Prisons Near This Location
If you’re fascinated by haunted prisons, remember to check out the Old Montana State Prison just a few hours away. It ranks among the most popular haunted prisons, with a violent past and frequent ghostly sightings.
Many visitors report similar paranormal experiences, from cold drafts to apparitions in abandoned cells.
Watch Paranormal Investigations of the Idaho State Penitentiary
An Unforgettable Haunting Experience Awaits
My husband and I visited the Idaho State Penitentiary last year. We love this type of thing, so when we felt the chill in the solitary confinement cells, it seemed like something was watching us.
As avid fans of paranormal TV shows, we couldn’t pass up the chance to walk the haunted corridors ourselves. If you’re into ghost hunting or just curious about haunted history, this is a must-see stop!

Hi, I’m Linda H. I’m in my 40s and have a deep passion for paranormal TV, ghost stories around the bonfire, and thriller-style movies. I love exploring the supernatural and sharing spine-chilling tales, making my content on this website both eerie and thrilling.
