Sonoma Valley Regional Park, Glen Ellen. Blue oaks, black oaks, Oregon oaks, great views of the valley. It's in the middle of the Habitat Corridor. Jack London State Park, Glen Ellen. On west slope of valley, inhabited by redwood and other hardwoods, conifers.
Strenuous hike worth it for fine view of Bay Area.
Sugarloaf Ridge State Park . Two thousand foot hike to summit of Bald Mountain, which offers a 360 panorama of Bay Area. Town of Kenwood , northern part of valley. Built on a freshwater marsh that once was a lake. Pauline Bond Community Garden , Ecology Center project on 7th Street East in Sonoma.