Sonoma is a historically significant city in Sonoma Valley, Sonoma County, California, USA. It is situated in the Sonoma Valley, with the Mayacamas Mountains to the east and the Sonoma Mountains to the west, with the prominent landform Sears Point to the southwest. The plaza is a National Historic Landmark and still serves as the towns focal point, hosting many community festivals and drawing tourists all year round. It provides a central tourist attraction.