(Madelyn Beck / Mountain West News Bureau)

During its time of operation, the Old Idaho Penitentiary had thousands of people pass through its gates; however, not everyone who arrived got to leave.

This could be why the prison is now considered one of the most haunted spots in the Gem State, prompting visits from paranormal investigators and plenty of curious tourists.

Anthony Parry, historic sites administrator, joined Idaho Matters to talk more about the eerie site.