It is now open year-round for visitation. Call 208-334-2844 for more details. Note: The Old Idaho Penitentiary will be open on Friday, October 30, and Saturday, October 31, for Fright Nights. The site will be closed Thursday, October 29, Friday, October 30, and Saturday, October 31, during regular business hours for event setup. Built in 1870, the Old Idaho Penitentiary is one of only four territorial prisons open to the public today. During its 101 years of operation, the site saw escapes, scandals and the effects of Boise’s transition from the “wild west” to a mid-20th century capital city. Step inside the four walls of the prison yard and imagine a life of confinement as steel doors close behind you. The Idaho State Historical Society operates the Old Idaho Penitentiary and is an extraordinary system of cultural and historic resources comprised of the Idaho State Museum, Idaho State Archives, Idaho State Historic Preservation Office (SHPO), and Historic Sites Program. We seek to inspire, enrich and engage all Idahoans by leading the state in preserving, sharing, and using history and cultural resources relevant to today to inform and influence the future.
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