It was never completed or named, but being in the huge concrete chambers and imagining an enemy fleet steaming towards San Francisco is still a chilling thought. From San Francisco, get an early start and drive across the Golden Gate Bridge and park at, From the same parking lot we suggest hiking one mile down to, Check out the amazing 360 degree view from, Drive east on Bunker Road which goes through a tunnel back to the Sausalito side of the headlands and the ramp to the 101 for a trip back across the Golden Gate Bridge. It's a big reminder of how on edge the whole west coast was during both World Wars.Author's bio: Alex Drude is a Bay Area native. First off pack a lunch, and lots of snacks and drinks as there are no easy food options in this area. The black pillow basalt was created from lava spewing from vents, while the red-brown radiolarian chert formed as the remains of radiolarians (microscopic protozoans) collected in layers. The Marin Headlands is home to a diversity of animal species. The Marin Headlands are a large section of the Golden Gate National Recreation Area, which encompasses most of the northwestern San Francisco Bay Area. Of course there are dead spots, but those are usually rather spectacular areas and you shouldn't be on your phone there anyway.Insider tip for The Marin HeadlandsWhile Conzelman Road, the main Golden Gate scenic route, has spectacular views of the Bay and San Francisco, it is also the way to access the most thought-provoking structure in the Park, called Battery Construction 129. Visit artists-in-residence at Golden Gate's park-partner organization, the Headlands Center for the Arts. The extremely-kid friendly Marine Mammal Center is at Fort Cronkhite, one of many former military installations.

Kirby Cove Beach is at the base of the Marin Headlands north of the entrance to San Francisco Bay. Discover the many cultures that have called the Marin Headlands home, from the Miwok Indians to the American Military and everything in between. Here is our suggestion for seeing the Marin Headlands in a day (a full day). For the price of a bridge toll, you can have lots of outdoor options with easy access. There are many.

The further along the fewer the crowds and the more spectacular the sights. Due to the close proximity of the Pacific Flyway, the headlands also hosts a large variety of owl, song and shore birds. Open the 1st Sunday of each month from 12:00 - 4:00 pm. Begin your explorations at the Marin Headlands Visitor Center or call ahead: (415) 331-1540. The Headlands begin at the north side of the Golden Gate Bridge, extend west to the Pacific Ocean and from there north to the Mount Tamalpais State Park boundary. The Marin Headlands houses an amazing richness of history and biological diversity due to the variety of habitats and unique geology of the area. Take a cell-phone tour of Fort Baker, an Endicott-period army post from the early 1900's. The Marin Headlands are a large section of the Golden Gate National Recreation Area, which encompasses most of the northwestern San Francisco Bay Area. Wildlife Egrets, grebes, and mallard ducks can be found year-around patrolling the waters of Rodeo Lagoon. The hill also offers prime mission blue butterfly habitat. the Marin Headlands Visitor Center at (415)331-1540. At designated signs, visitors can call a number, punch in a code and listen to that part of the tour. Discover the many cultures that have called the Marin Headlands home, from the Miwok Indians to the American Military and everything in between.