By Natural Bridges State Beach, this kids' educational center is part of UCSC’s Long Marine Laboratory. Interactive natural-science exhibits include tidal touch pools and aquariums, while outside you can gawk at the world’s largest blue-whale skeleton. Guided one-hour tours happen at 1pm, 2pm and 3pm daily, with a special 30-minute tour for families with younger children at 11am; sign up for tours in person an hour in advance (no reservations).