Casa Grande is a historic site located in Arizona, known for its impressive ancient structure built by the Hohokam people around the 14th century. The site features a large adobe building, which served as a multi-story dwelling and a center for community activities. It is part of the Casa Grande Ruins National Monument, established to preserve and protect this significant cultural heritage. The Casa Grande structure is notable for its unique architectural design, including thick walls and large windows. Visitors can explore the surrounding area, which includes other archaeological remains and interpretive trails that provide insight into the lives of the Hohokam and their advanced irrigation systems.