Casa Grande Ruins National Monument in Arizona, USA - map and visitor information

Research checked: 2026-11-05. Check linked official notices before travel.

Casa Grande Ruins National Monument in Coolidge, Arizona, preserves an Ancestral Sonoran Desert farming community. View the Great House from outside in Compound A and use the visitor center exhibits to place it in the wider network of settlements and irrigation canals.

Look beyond the Great House

The earthen Great House stands beneath a modern shelter. Look for the lower walls around it in Compound A. They make it easier to see the large building as one part of a settlement.

Know before you go

Fees, hours, and seasonal access

Plan for desert heat

Summer daytime temperatures often exceed 100°F. Bring drinking water and use a hat, protective clothing and sunscreen. Dust storms can sharply reduce visibility on nearby roads. Check the NPS operating hours before driving to the monument near closing time.

Protect the earthen ruins

View the Great House from outside. The superintendent’s compendium closes its interior to public tours and ordinary public use. Keep to visitor walkways and never climb the ruins. Carry pets through the visitor center museum and restrain them in a crate, cage or leash no longer than 6 feet. Pets cannot walk through the museum, even on a leash.

Call ahead for larger groups

NPS requires advance reservations for tour groups of more than 15. School groups, including colleges and universities, should call ahead, and those of 15 or more need a reservation. Use the NPS group information to confirm your arrangements.

Follow the signs toward Coolidge

Approach on AZ-87 and follow the brown monument signs in Coolidge. From the AZ-87 and AZ-287 junction, the monument entrance is about half a mile south. The entrance road continues to the visitor center.

Other public lands by road

Casa Grande Mountain Trails can be reached by Arica Road from Sunland Gin Road. Peralta Regional Park is on East Peralta Road near Florence Junction.

Pair Compound A with the museum

Walk through the public portion of Compound A to see the exterior of the Great House and neighboring ruins. The visitor center has museum exhibits and a theater. If you arrive late, prioritize the outdoor view and leave enough time to exit by closing.

Visitor center, picnic area and accessibility

The visitor center has an information desk, museum, bookstore and film. Accessible parking is available near the visitor center and covered picnic area. The ruins area has firm packed ground. The NPS accessibility guide lists captioning, mobility aids and other services.

An agricultural community in the Sonoran Desert

The site was part of a wider system of farming communities and irrigation canals. The Great House’s exact purpose remains uncertain.

Protecting the ruins

The federal government set aside the ruins in 1892. Casa Grande Ruins became a national monument in 1918. The current steel shelter dates to 1932.

Desert wildlife near the ruins

NPS identifies the round-tailed ground squirrel as common within the monument.

Contact the monument

Call 520-723-3172 or use the National Park Service monument page to plan a visit.