Lake Sonoma 3333 Skaggs Springs Rd., (707) 433-9483. Free.
This scenic spot hosts all manner of water activities--fishing, boating, water-skiing, swimming. Everything from a canoe to a patio boat or houseboat can be rented from the Lake Sonoma Resort. Campsites are available.
The Milt Brandt Visitors Center displays the area's wildlife and provides a self-guided tour through the Congressman Don Clausen Fish Hatchery. When the steelhead trout and salmon run here, usually from November through April, they can be observed using a man-made fish ladder.
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