If you would like a little adventure, then hike from Muir Beach to this little hidden cove. It's charmingly beautiful but water is dangerous.
More info at Protrails.com http://www.protrails.com/trail/498/san-francisco-marin-headlands-mt-tamalpais-point-reyes-pirates-cove
Address 94965, United States
Coordinates 37°51'7.355" N -122°33'43.621" E