Jembatan · Yerba Buena Island · 326 tips dan ulasan
HISTORY: The longest (and most expensive) bridge in the world when it opened in 1936, the Bay Bridge was first proposed by self-proclaimed "Emperor Norton I" in 1869.
Gedung Pemerintah · The Pentagon · 97 tips dan ulasan
HISTORY: Lt. Col. Hugh Tracey and architect George Bergstrom conceived this building's five-corner design during a feverish summer weekend early in World War II.