Muir Woods Road (off Highway 1), Mill Valley 94941. (415) 388-2595 information). Call (415) 388-2596 for a real person. Twelve miles north of the Golden Gate Bridge. Daily, 8:00 to sunset. Reservations for large groups. Special events, employees, educational programs, (415) 388-2596. Ages 17 and up, $2.
Best time to visit is mid-week in the morning or late-afternoon. Parking is limited to what the woods can handle. Nice trails and day hikes. Call ahead for ranger talks (15-20 min) for your group. They will also do the Junior Ranger program with them, ask for it when you call for the ranger talk.