Portal:National Register of Historic Places/Did you know/4

• ...that when builders told Lou Henry Hoover, who designed her own house (pictured), that some of her architectural ideas weren't done, she replied, "Well, it's time someone did"?
• ...that the F-111 fighter, the B-1 bomber, the Space Shuttle, and the Boeing fleet of commercial airliners were all tested at the Unitary Plan Wind Tunnel?
• ...that the Benicia Arsenal, in Benicia, California, was once home to the short-lived U.S. Camel Corps?
• ...that Room 307, Gilman Hall on the campus of the University of California, Berkeley, where the element plutonium was discovered, is a United States National Historic Landmark?
• ...that the Alameda Works Shipyard in Alameda, California, was one of the largest and best equipped shipyards in the United States?