Celebrate 150 years of history at Family Day in Prison on Saturday, July 11, 2026, at the Yuma Territorial Prison State Historic Park. Bring the whole family for a day of fun featuring storyteller-led tours that bring the prison’s past to life, free ice cream, and a hands-on puzzle box challenge where clever participants can unlock a prize. Whether you’re exploring Arizona history, solving mysteries, or simply enjoying a summer day together, Family Day in Prison offers something for all ages as we celebrate the 150th anniversary of one of the West’s most legendary prisons.