Just three miles west of Muir Woods, you'll find Muir Beach, a quiet cove rich in wildlife, including dolphins, who enjoy playing in the mid-size waves. Nude sunbathers usually stake out a patch at the northern edge of the sand, and many people will bring children and dogs and make a day of it, as you're allowed to set campfires. It's a favorite spot for hikers as well because multiple trails--including the scenic Coyote Ridge--are accessible from the beach parking lot. It can get windy and chilly, though, so be sure to plan accordingly.