Old Idaho State Penitentiary

This complex sits on a hillside east of downtown and displays several sandstone buildings that house three-story cell blocks. The rooms hold administrative offices, workshops, and exhibits filled with objects from prison daily life.

The facility began receiving prisoners in 1872 and closed a century later after uprisings protested poor conditions. Over the years the walls saw building expansions and modifications until the shutdown took place.

Visitors today walk through cell blocks where iron bars and narrow corridors give a direct sense of confinement. The displays use objects and photographs to show how prisoners spent time during decades of routine and discipline.

Visitors can explore the site on their own or join tours that provide background about the rooms. Paths lead through different buildings with some stairs to navigate.

A tomcat lived sixteen years inside the walls after a prisoner found him in 1952 and officials kept him as mascot. The animal had free access to corridors and was cared for by guards and inmates.

Location: Idaho

Website: https://history.idaho.gov/old-penitentiary-hours-location

GPS coordinates: 43.60280,-116.16200

Latest update: December 5, 2025 22:31