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FREE · MUSEUM

Contra Costa County Historical Society History Center

Name: Contra Costa County Historical Society History Center
Address: Bay Area, CA, US

County history archive and museum in downtown Martinez with photos, maps and records since 1850

IS IT REALLY FREE?

Free. Admission is free per the official page. Confirm before you go.

📍 Downtown Martinez

🕑 Year-round

Official source ↗ · Last checked 2026-11-07

HOW WE VERIFIED

We opened the official page on 2026-11-07, confirmed the name matched, and kept the listing only when the page was live. Hours and prices change — always confirm on the official source before you go. How we verify

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