The Casa Grande Ruins, Mission San Xavier del Bac, and Saguaro National Park.
Casa Grande was built in the early 14th century. Start out at the Visitors Center before you enter the ruins. Don’t miss the ball court and two platform mounds, which is said to date from the 1100s.
With elements of Spanish, baroque, and Moorish architectural styles, San Xavier del Bac was founded in 1692 by Father Eusebio Francisco Kino.
You can hike, bike, or drive through the Saguaro National Park. Pack your lunch [there’s no food service] and bring plenty of water.