Yuma Territorial Prison State Historic Park
Arizona State Historic Park; National Register Of Historic Places · Yuma, Arizona
The ruins of Arizona Territory's prison on a bluff above the Colorado River in Yuma, which held more than 3,000 prisoners between 1876 and 1909, including the stagecoach robber Pearl Hart. Inmates built much of it themselves from local stone and adobe. Visitors walk into cell blocks with strap-iron bunks, the Dark Cell cut into the rock for punishment, the guard tower overlooking the river and the prison cemetery. The museum tells stories of the men and women held here and of prison life in the desert heat. After the prison closed, Yuma High School used the buildings, and the school's teams are still called the Criminals. In 2026 admission was $10 for adults, and in summer the park opened 8:30 AM to 4 PM.
220 North Prison Hill Road, Yuma, Arizona, 85364, United States
Summer (June-September): 8:30 AM-4 PM (2026). The rest of the year the park opens daily with longer hours (check). Closed Thanksgiving Day, Christmas Eve and Christmas Day.
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