Casa Grande Ruins National Monument

Casa Grande Ruins National Monument is a national monument run by the National Park Service in Arizona.

In the park service’s words

An Ancestral Sonoran Desert People's farming community and "Great House" are preserved at Casa Grande Ruins. Whether a gathering place for people or simply a waypoint marker in an extensive system of canals and trading partners, the structures are a large part of the story of this site. Explore the history and stories of an extended network of communities and irrigation canals.

From the National Park Service (public domain).

Fees and hours

Entrance fee: No entrance fee.

Hours: Daily, 9:00AM - 4:00PM. The monument is open 7 days a week, with the exception of being closed Juneteenth, Independence Day, Thanksgiving, and Christmas. The gate closes 15 minutes prior to closing, with access for exiting the park still available on the outgoing side.

Getting there

Transportation is by private vehicle. The park is in Coolidge, Arizona, about an hour-long drive from either Phoenix or Tucson. From Interstate 10 take the Coolidge exits and follow the signs to the park entrance.

Drive times run from the airport to Zion Canyon Visitor Center, estimated with OSRM routing on OpenStreetMap roads at normal speeds; allow extra for traffic, stops and construction.

Miles are straight-line distances.

Visitor centers

• Casa Grande Ruins National Monument: Daily, 9:00AM - 4:00PM. From July 6 through September 22, 2025, the park visitor center will close each Sunday and Monday, with passport stamps, brochures, and Jr Ranger books available on the visitor center patio. The park itself remains open seven days a week, 9am to 4pm. The gate closes 15 minutes prior to closing time. There is no access to any areas of the park after the gate closes. At closing time, visitors need to exit all areas of the park.

Weather

Summer daytime temperatures frequently exceed 100 degrees F. Winter temperatures range from the 60's to the 80's F. Spring and fall are warm and dry, with highs in the 80's and 90's F. During summer months, be prepared for hot temperatures. Protective clothing, hats, sunscreen and personal water containers are highly recommended. BE AWARE: Walls of dirt and debris, usually miles wide and thousands of feet high, are pushed across dry desert terrain by high winds, causing dust to engulf highways.

From the National Park Service (public domain).

Know before you go

Drones are banned at almost every park site, and you may not take rocks, plants or artifacts. Pets must be on a leash no longer than 6 feet where they are allowed. Bring no firewood from home.

Nearby

The nearest national park is Saguaro, about 79 miles away in a straight line.

Sources

• National Park Service Data API: Casa Grande Ruins National Monument (public domain)
• Official website

Last checked 1 November 2026.