Largest and Oldest Military Aviation Museum

 From a major story at Auto-Evolution.com:

"If you have a desire to see the largest collection of aircraft you can’t find anywhere else in the world, there’s only one place you should consider visiting first. Opened in 1923, now spanning over 25 acres, the National Museum of the United States Air Force, on the grounds of Wright-Patterson Air Force Base near Dayton, Ohio, holds over 350 unique aircraft. Making the facility the largest and oldest military aviation museum on the planet by a significant margin."