The Old Idaho Penitentiary is a division of the Idaho State Historical Society. The "Old Pen" opened as a territorial prison in 1872 & closed its doors in 1973. It is now open year-round for self-guided & guided tours. Call 208-334-2844 for more details.
The Old Idaho Penitentiary opened its doors in 1872 to some of the West’s most desperate criminals. Today, visitors can experience over 100 years of Idaho’s unique prison history with a visit to Solitary Confinement, cell blocks, and the Gallows. The Friends of the Historical Museum and Old Idaho Penitentiary is an organization dedicated to support the Idaho State Historical Museum and the Old Idaho Penitentiary.
The Old Idaho Penitentiary features thirty historic buildings and special exhibitions including the J. Curtis Earl Memorial Exhibit of Arms and Armaments. Events and programs provide families, school groups, and visitors an opportunity to relive the Old Pen's exciting past of daring escapes, scandals, and executions. The Old Idaho Penitentiary is located in the Old Penitentiary Historic District and is open year round.