I never knew anything about this place but I found this interesting:
Quote:
The ultra-modern Rotunda was a huge attraction, becoming the fifth most popular United States tourist destination during the 1950s. In fact, only Niagara Falls, the Great Smoky Mountains National Park, The Smithsonian Institution, and the Lincoln Memorial were more popular. Yellowstone, Mount Vernon, the Washington Monument, and the Statue of Liberty all received less visitors.
