Casa Grande Ruins National Monument

32.995459, -111.535528 (520) 723-3172

One of the largest prehistoric structures ever built in North America, its purpose remains a mystery. Located in Coolidge, in Southern Arizona, just 1 ½ hours west of Tucson, Casa Grande Ruins is a historic site that features the fascinating and mysterious ruins of an ancient Sonoran Desert People’s farming community and ‘Great House’, that had an extensive system of irrigation canals.

This park unit is part of the Juan Bautista de Anza National Historic Trail. It was also integral to the creation of the Antiquities Act which gives the President power to set aside valuable public natural and historic areas as park and conservation land. President Woodrow Wilson proclaimed Casa Grande Ruins to be a National Monument on August 3, 1918, and the site was added to the National Register of Historic Places on October 15, 1966.

Location & Local Communities: Casa Grande Ruins National Monument, the first historic site to receive protected status by the United States Government, is located in Pinal County, in Coolidge, AZ, off Arizona Boulevard at 1100 W Ruins Dr, Coolidge, AZ 85128. Coolidge is 56 miles southeast of Phoenix, 69 miles northwest of Tucson, 21 miles northeast of Casa Grande, and 11 miles southwest of Florence. 

For more information call (520) 723-3172 or visit

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Date Park Established August 3, 1918
Website Link Visit Link Here
Phone Number (520) 723-3172
Country United States of America
State/Province Arizona
distance: 64 Miles
Address 32.995459, -111.535528
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