Sonoma County’s Historical Landmarks

Sonoma County is home to 27 California Historical Landmarks, including six of the original 20 landmarks officially designated by the Department of Natural Resources on June 1, 1932. The emphasis was on well-known places and events in California History, especially missions, early settlements, battles, and the gold rush.

Most Sonoma County landmarks are in and around the city of Sonoma, and many relate to Mariano Vallejo. Others are scattered throughout the county.

Historical Landmarks are buildings, structures, sites or places that have been determined to have statewide historical significance. Designated by the number in the order they were added to the statewide list, here are Sonoma County’s state Historical Landmarks.