Cross Media International photograph ~ Mark Your Calendar ~ Upcoming Events at Treasure Island Museum click on the titles below for more information or to make a reservation Port Chicago Weekend 2026 ~ Opening Event July 17 Ralph Stackpole: Stone and Fresco Master of Montgomery Street Saturday, July 25 Collection Manager’s Tour of our Archives Saturday, August 6 Doors Open California ~ Open House and Tours Sunday, September 6 Treasure Island Museum's Annual Swing Dance Benefi

Please note: a huge event on Treasure Island (complicating transit and parking, as well as access to Building One and, in turn, our galleries) is scheduled this Saturday, June 13.