Casa Grande Ruins National Monument, AZ

National Park Service

Explore the mystery and complexity of an extended network of communities and irrigation canals. An Ancient Sonoran Desert People's farming community and "Great House" are preserved at Casa Grande Ruins...[more]

school children enter the 'secret room' in one of the ruins while assisted by a park volunteer
Secret Room

While the Great House is not open for interior tours a popular stopping place for children can be found in one of the corner buildings. Known popularly as "the secret room" this roofless room does have four standing walls and a tiny doorway. Visitors are reminded not to climb or damage walls, and so far their respect for the ruins has permitted this "secret room" to be preserved and yet open for casual visits.


The Great House with its roof shelter and other earthen remains at Casa Grande Ruins
Great House 1a

The Great House with its National Engineering Landmark shelter stands proudly in Compound A. There is more to Casa Grande Ruins than one structure, however. Compound A has partial walls for other buildings and there are other compounds preserved within the park grounds. It is the Great House, and Compound A, that are open to the public daily.


view of the Great House with its protective roof shelter
Great House 2a

The 1932 roof shelter protecting the Great House is designated a National Engineering Landmark. It stands above the earthen structure built by ancestral Sonoran Desert people over 700 years ago.


covered picnic tables near trees
Picnic Area

One of the three covered picnic shelters available for public use near the park visitor center.


a scene from the park movie peoples the ruins with actors demonstrating common chores
Movie Still 5c

The park's film includes oral histories from traditionally associated tribes and interviews with various archeologists. Cinematic representations of life during the Hohokam era are portrayed as well. Wayside signs and the description narrations of park volunteers leading guided tours also help to 'people' the area. This was an active and vibrant community some 700 years ago.


view of the Great House and other surrounding earthern building remains
Great House 3a

The Great House with its surrounding neighbors of other earthern ruins is an icon in the desert near Coolidge, Arizona. The ancestral Sonoran Desert people were masters of irrigation farming and this community benefited from their engineering knowledge. The Great House may have been part of the control system for the irrigation project, or it may have had other cultural or religious purposes.


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Casa Grande Ruins National Monument


Casa Grande Ruins National Monument
1100 West Ruins Drive
Coolidge, AZ 85128

Directions 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.

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