World's Most-Visited Museums
David Coleman / Alamy
No. 2 Smithsonian National Air and Space Museum, Washington, D.C.
Annual Visitors: 8,300,000
Opened in 1976 on the National Mall, the world’s largest collection of historic aircraft and spacecraft has aviation fans streaming in to see 50,000 original artifacts, from the original Wright brothers’ 1903 flyer to a sample of lunar rock that visitors can touch (all for free). Kids also love this museum for its flight simulators, 3-D space shows at the Albert Einstein Planetarium, and cool “How Things Fly” exhibit. nasm.si.edu
Source: Smithsonian Institution