I've been to the National Air and Space Museum on the Mall in Washington, D.C., it's very cool, but the constraints of downtown real estate make it a relatively small museum. However, Nilan and Jackie discovered the Steven F. Udvar-Hazy Center in middle-of-nowhere Virginia, which is a larger wing (ha!) of the D.C. museum. It's a 760,000 square foot facility which is essentially a giant airplane hangar filled with planes. The history of aviation plays out in that space, from actual aircraft built by the Wright brothers (plus replicas and reconstructions) to the Concord (and beyond). Nilan and Jackie took us there on our most recent trip to visit them in Silver Spring.