Open Space Preserves

Small 87 acre preserve.

This small preserve sits beside the Worn Springs Fire Road at the edge of lands.

193 acre preserve at the headwaters of Larkspur Creek.

This preserve is the largest link (899 acres) in a chain of preserves.

This coastal preserve 1077 acres in size.

106 acre preserve incorporates a tidal wetland.

Contains a variety of habitats including grasslands, bay/oak woodlands.

Lush preserve, tucked into the hills above Fairfax, is one of the true gems of Marin.

No longer a true island, this preserve rises above the eastern edge of Novato.

The south-facing slope above the western end of the San Geronimo Valley.

1500 acre property gives a sense of true wilderness.

The sight of horses grazing on hillside has been a landmark for decades.

The spectacular views and the sense of solitude make the climbing worthwhile.

One of the best preserves to visit during a summer heat wave.

Has variety of trails and roads in this preserve that offer loop hikes.

Home to amphibians like California Giant Salamanders and Ensatinas.

See Western Tiger Swallowtail butterflies during spring and summer.

Spectacular views of the entire Bay Area throughout.

Forms a contiguous band of undisturbed open space.

Has much of the south-facing slope rising above what is now known as Lucas Valley.

Hosts a single trail that carries hikers to the top of the San Geronimo Valley.

Along the way, visitors pass through lush grasslands.

The only place to see the rare Tiburon jewelflower.

A 504 acre preserve forms a contiguous band of undisturbed open space.

One of the most valuable pieces of real estate on the planet.

Overlooking the heart of the beautiful San Geronimo Valley.

Perhaps the most popular asset of this 522 acre preserve.

Form an impressive backdrop to the Marin County Civic Center.

Remnant of a grand plan to create a subdivision resembling the city of Venice.

33 acre preserve features a small patch of salt marsh surrounded by a levee.

Large preserve protects the ridges that surround several small communities.

Small 15 acre preserve that is least used, but most visible among all MCOSD lands.

A 115 acre preserve in western Novato protects a ridge.

During spring, this landscape is quite picturesque.