The entire Mount Tamalpais area is a worthwhile visit, although it gets crowded and the parking can be hard to come by. I encourage folks to make their way up the mountain stopping along the way to hike, take pictures, and enjoy the views. Make sure you also enjoy the drive, because while it is windy, it can be a whole lot of fun. You should absolutely end your visit to Mt. Tam by going to the Cushing Memorial Amphitheater. This place has so much history, is incredibly unique, and has an awesome view of San Francisco. Finish up here and then drive back down the mountain to catch a beer and a nap!