National monument in Coolidge preserving a Classic Period Hohokam (ancestral Sonoran Desert people) compound and the four-story caliche “Great House” (Siwañ Waʼa Ki), built ~1300s CE and abandoned by ~1450. First prehistoric cultural reserve in the U.S. (1892); distinctive Olmsted-designed shelter covers the Great House. Compound walls, ballcourt traces, and CCC-era adobe admin buildings remain.
Field facts
| Region | Pinal County, AZ |
|---|---|
| Coordinates | 32.9970, -111.5321 |
| Era | Hohokam Classic ~1150–1450 CE |
| Peak | Great House under Olmsted shelter |
| Access | Paved urban approach; short paths |
| Nearby | Coolidge / Florence / Picacho Peak |
| Fee | Free — entrance fees eliminated 2019 |
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Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.
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