Discover San Francisco's most extensive - and most secret - World War II military fortification. For more information, please call the Marin Headlands Visitor Center, (415) 331-1540.

Enjoy our beautiful National Park by exploring the Marin Headlands.  Join volunteer Jane Haley on an easy walk around Rodeo Lagoon and learn about our feathered friends. Reservation required, please call (415) 331-1540.

Join Marin County Parks and One Tam at the scenic Gary Giacomini and French Ranch Preserves as we try to identify and document every living species we see! Hone your naturalist skills, learn to use the iNaturalist smartphone app, and contribute valuable data about Mt. Tam's biodiversity.

Join Marin County Parks and One Tam at the scenic Roy's Redwoods Preserve as we try to identify and document every living species we see! Hone your naturalist skills, learned to use the iNaturalist smartphone app, and contribute valuable data about our region's biodiversity.

Explore the shore of Rodeo Lagoon with docent Jane Haley and enjoy the winter birds.

Join One Tam for a morning of habitat restoration! We will be removing invasive French broom and other weeds near the scenic Bootjack Trail to make more space for diverse native species.

During this easy two-mile walk, hear about the challenges and triumphs of the African American "Buffalo Soldiers" during a time of overt racism and prejudice.

Join One Tam in our effort to control invasive French broom and maintain habitat for native plants and animals along the Old Mine Trail!

Join us to learn how the soldiers of Fort Point came together to protect the San Francisco Bay. Afterwards, you and other visitors can demonstrate your knowledge and become certified Fort Point cannoneers!

Join us to learn how the Fort's soldiers came together to protect the San Francisco Bay. Afterwards, you and other visitors can demonstrate your knowledge and become certified Fort Point cannoneers!