Yuma Crossing
Immediately after the Mexican–American War in 1848, the U.S. Army built Fort Yuma here to protect travelers from Indians raiding the area. It was the center point of conflict in the Yuma War of 1850–53. From 1864–1890, the fort and nearby facilities was the main army base to support the US Army's efforts to control the Indians throughout the greater southwest.
Yuma Territorial Prison
Opened while Arizona was still a U.S. territory, the prison accepted its first inmate on July 1, 1876. For the next 33 years 3,069 prisoners, including 29 women, served sentences there for crimes ranging from murder to polygamy. The prison was under continuous construction with labor provided by the prisoners. In 1909, the last prisoner left the Territorial Prison for the newly constructed Arizona State Prison Complex located in Florence, Arizona. It was also the 3rd historic park in Arizona.