Casa Grande Ruins National Monument

Casa Grande Ruins National Monument (O'odham: Siwañ Waʼa Ki: or Sivan Vahki) is a United States national monument preserving a group of Classic Period (1150–1450 CE) Hohokam structures in Coolidge, Arizona, northeast of Casa Grande. == History of the area == The national monument consists of the ruins of multiple structures surrounded by a compound wall, constructed by the ancient people of the Hohokam period.

Source: Wikipedia — Casa Grande Ruins National Monument (CC BY-SA 4.0)