Public Events

Sunday, September 20, 2026 2:00 to 4:00 p.m. Costa Mesa Historical Society 1870 Anaheim Avenue, Costa Mesa Google Maps Join the Costa Mesa Historical Society for our 4th Annual Bike Tour as we explore Costa Mesa on two wheels with Councilmember Arlis Reynolds and Arts Commission Chair Alisa Ochoa. This year’s route will explore Costa Mesa history, with a special focus on arts and culture, in some of Costa Mesa's oldest neighborhoods. We will pedal through history…

Our sincere thanks to the following donors who contributed items to the 60th Anniversary Celebration silent auction: Our starting bid approach: We set starting bids at roughly 40–50% of each item’s fair market value (FMV), per standard nonprofit auction practice — this lowers the barrier to that first bid and builds bidding momentum as it climbs. FMV is listed with each item so bidders can also calculate their tax-deductible portion. South Coast Metro Alliance Description: A South…

Join the Costa Mesa Historical Society for an elegant evening celebrating sixty years of preserving the history, architecture, stories, and cultural legacy of Costa Mesa. This special anniversary event will bring together community supporters and preservation advocates for an evening reflecting on the past while helping shape the future of the Society. The evening begins with a private open house at the Costa Mesa Historical Society Museum, followed by a reception and dinner at the Norma Hertzog…

Saturday, August 29, 2026 | 11:00 AM – 3:00 PM Diego Sepúlveda Adobe & Estancia Park 1900 Adams Avenue, Costa Mesa, California The Costa Mesa Historical Society invites the community to join us for a special afternoon celebrating the Society’s 60th Anniversary at one of Costa Mesa’s most treasured historic landmarks, the Diego Sepúlveda Adobe. “An Afternoon at the Adobe” will bring together local museums, historical organizations, preservation groups, community partners, and families for a free public…