Crystal Cove State Park in Orange County has bluff top wedding sites that allows beach weddings. Sonoma Coast State Beach offers vistas of the rugged northern coastline and the Pacific Ocean, which appears a beautiful aqua shade of blue.

Other weddings not on the beach necessarily:

 

Inland in northern California's Chico, the pink mansion, the Bidwell Mansion, that was once home to the city founders,  features a gazebo for lovely outdoor weddings.  Marshall Gold Discovery State Historic Park, in the heart of Coloma, features 2 beautiful historic churches and 3 shady picnic areas perfect for an outdoor ceremony or reception. Sonoma State Historic Park near downtown Sonoma can accommodate 200 guests (standing) in the Mission Chapel. The adjacent Mission courtyard provides space for 300 for a reception. The Barracks Courtyard is similar venue available for outdoor functions. The Vallejo Home and Gardens a half mile west of the Mission provides a lovely garden location for up to 200 guests. Surrounded by hills and vineyards, Jack London State Historic Park offers a dramatic setting for up to 300 guests at its Winery Ruins. The site was originally part of the Kohler Frohling Winery; the buildings were later adapted by Jack London as a carriage barn and bunkhouse. In the Napa Valley, the Bale Grist Mill State Historic Park has an outdoor site, next to a fully restored flour mill. It can accommodate 75 guests. Travel along old brick pathways to a location cradled among Victorian era structures and become immersed in a small-town early California setting. Tucked behind the historic Fischer-Hanlon home is the Benicia Capitol State Historic Park's intimate special event site. This venue in Solano County may accommodate 40 guests.