Yuma Territorial Prison State Historic Park is located in Yuma, Arizona. Established in 1876, it served as a prison until 1909, housing notorious criminals of the time. The park features preserved buildings, including cell blocks and the original guard tower, offering visitors a glimpse into the harsh conditions faced by inmates. Today, the park serves as a museum, showcasing artifacts and exhibits related to the prison's history. Visitors can explore the grounds, learn about the lives of the prisoners, and understand the significance of the Colorado River in the prison's operation and the development of the Yuma area.