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Museum and Library
The Costa Mesa Historical Society office, archive, museum and library are open to the public on Thursdays and Fridays from 10:00am until 3:00pm, or at other times by appointment. The building is located near the downtown library and recreation center at 1870 Anaheim Avenue. Learn more…
Please note: the Anaheim Avenue entrance to the Historical Society Museum is temporarily closed while the new library is under construction. Please enter from Park Avenue, near the fire station.
Diego Sepulveda Adobe
The Diego Sepulveda Adobe is open the 1st and 3rd Saturday of each month 12pm – 4pm. The adobe is located in Estancia Park, 1900 Adams Avenue, Costa Mesa. Please contact us at the above address or phone number for more information. Learn more…
Costa Mesa Historical Society PO Box 1764 Costa Mesa, CA 92628
(949) 631-5918 contact@costamesahistory.org
SAAAB Wing PO Box 1764 Costa Mesa, CA 92628
(949) 631-5918 saaab@costamesahistory.org