Local note · Last reviewed June 30, 2026
Don Edwards San Francisco Bay National Wildlife Refuge brings marshes, trails, birds, visitor information, and bay-edge open space into Fremont.
3 sources
Local note · Last reviewed June 30, 2026
Ed R. Levin County Park gives Milpitas a large foothill park with trails, picnic areas, fishing, dog-park space, and views toward the Bay.
2 sources
Local note · Last reviewed June 30, 2026
El Dorado East Regional Park has 388.2 acres with bike trails, fishing lakes, picnic areas, playgrounds, archery, and a nature center.
1 source
Local note · Last reviewed June 30, 2026
Elk Grove Park has reservable picnic areas, a jogging and bike trail, and community space that works for both quick visits and planned gatherings.
2 sources
Local note · Last reviewed June 30, 2026
Fairview Park is a 208-acre Costa Mesa park where public use, cultural resources, biological resources, vernal pools, and restoration planning all meet.
2 sources
Local note · Last reviewed June 30, 2026
Folsom points residents to parks, trails, and open space, including neighborhood parks, picnic areas, paved recreation routes, and trail maps for planning.
1 source
Local note · Last reviewed June 30, 2026
Fullerton Arboretum at Cal State Fullerton gives the city a plant-filled walking stop with themed gardens, visitor hours, and practical entry details.
2 sources
Local note · Last reviewed June 30, 2026
Gardena Willows is a small urban wetland preserve tied to the old Dominguez Slough, local stewardship, runoff, habitat, and community education.
2 sources
Local note · Last reviewed June 30, 2026
The General Sherman Tree stands at the north end of Giant Forest and is known as the largest tree in the world by volume.
1 source
Local note · Last reviewed June 30, 2026
Golden Gate Park gives San Francisco 1,017 acres of lakes, meadows, gardens, groves, activities, and major points of interest.
1 source
Local note · Last reviewed June 30, 2026
Great Park has more than 500 completed acres, with about 300 more acres still taking shape.
1 source
Local note · Last reviewed June 30, 2026
Grizzly Island Wildlife Area sits in the Suisun Marsh, with wetland views, wildlife watching, trails, fishing, and seasonal hunting.
1 source
Local note · Last reviewed June 30, 2026
Hayward Regional Shoreline has 1,841 acres of salt, fresh, and brackish marshes, seasonal wetlands, public trails, birdwatching, shoreline history, and Bay Trail connections.
1 source
Local note · Last reviewed June 30, 2026
Headwaters Forest Reserve protects coastal redwood forest near Eureka, with Elk River Trail access, sensitive habitat, storm-season cautions, and public-use limits.
2 sources
Local note · Last reviewed June 30, 2026
Henry W. Coe State Park protects wide Diablo Range hills, ridges, trails, and quiet open space east of Morgan Hill.
2 sources
Local note · Last reviewed June 30, 2026
Hidden Falls Regional Park near Auburn has multi-use trails, falls viewing decks, picnic areas, fishing, restrooms, and open space.
1 source
Local note · Last reviewed June 30, 2026
Knights Ferry is a Stanislaus River stop with recreation areas, old settlement history, and a covered-bridge landmark.
1 source
Local note · Last reviewed June 30, 2026
La Mesa's Secret Stairs in the Mt. Nebo and Windsor Hills area give walkers a steep public stair route with city-posted urban trail options.
2 sources
Local note · Last reviewed June 30, 2026
Lagoon Valley Park in Vacaville combines a non-motorized lake, multi-use trails, dog space, picnic areas, and the Pena Adobe Historic Area.
2 sources
Local note · Last reviewed June 30, 2026
Laguna Niguel Regional Park gives the city a central county park with a 44-acre lake, trails, fishing, picnic areas, and simple license checks.
2 sources
Local note · Last reviewed June 30, 2026
Lake Merritt is one of Oakland's most accessible park loops, with trails, gardens, boating, and bird watching close to downtown.
1 source
Local note · Last reviewed June 30, 2026
Lake Oroville State Recreation Area has a major reservoir, dam views, boating, trails, camping, swimming, fishing, and Feather River history.
1 source
Local note · Last reviewed June 30, 2026
Lake Perris State Recreation Area gives Perris a large state-managed outdoor anchor with swimming, boating, camping, trails, fishing, and seasonal access details.
2 sources
Local note · Last reviewed June 30, 2026
Legacy Fields Sports Complex in Tracy is a large north-side sports project where non-potable recycled water now irrigates fields while drinking-water fixtures stay on potable water.
2 sources