2 Best Sights in The Bay Area, California

The only fully restored site of its kind in the United States, the museum at SF-88 provides a firsthand view of menacing Cold War–era Hercules and Ajax missiles and missile-tracking radar, the country's last line of defense against Soviet nuclear bombers. It's worth timing your visit to take the guided tour, which features period uniforms and vehicles and includes a visit to the missile-launching bunker. On the first Saturday of the month the site holds an open house during which Nike veterans describe their experiences.

This one-of-a-kind education center focuses on a sprawling 1½-acre model of the entire San Francisco Bay and Sacramento–San Joaquin River delta system, complete with flowing water. Now open for public exploration, the model has been used by the U.S. Army Corps of Engineers to reproduce the rise and fall of tides, the flow of currents, and the other physical forces at work on the bay.