This still active lighthouse, hidden on steep cliffs, can be reached by quite a demanding trail - don't worry, you will be rewarded with exquisite views.
See also the historic Coast Guard rescue station along the way. If you want to explore Point Bonita's landscape, you can join a guided tour.
The tunnel halfway to the lighthouse is open only during visiting hours:
Sat, Sun, Mon: 12:30 pm - 3:30 pm
Wikipedia https://en.wikipedia.org/wiki/Point_Bonita_Lighthouse
Official Website https://www.nps.gov/goga/pobo.htm
Phone +1 415 331 1540
Address Fort Barry, Building 948, Sausalito, CA 94965, United States
Coordinates 37°48'56.142" N -122°31'46.336" E