My incomplete list of highly recommended places in Bay Area for visitors: SF: - Golden Gate Bridge + Muir Woods - Bay Area Discovery Museum - Exploritarium - California Academy of Sciences - Lands End - Lombard Street - Pier 39 - Treasure Island for a view of SF skyline - SF Zoo Coast: - Highway 1 drive from SF to Half Moon Bay - Moss Beach - Pacifica Pier - Half Moon Bay Rest of valley (sorted North to South): - YouTube Office (obviously) - BayFront Park for SFO Plane Spotting - Coyote Point Recreation Area - San Mateo Park, Japanese Garden - Stanford University - Walk on University Avenue in Palo Alto - Drive on Sand Hill road if you know its significance - Hike in the Stanford Dish area - Facebook HQ - Shoreline Park, Shoreline Lake boating, biking - Googleplex - Computer History Museum - California's Great America, Santa Clara - Apple Visitor Center, Cupertino - Rose Garden - Tech Museum of Innovation, San Jose - Children's Discovery Museum