The Museum of Flight in Seattle is building a new Aviation Pavilion, which will debut on June 25.

The open-air structure will extend the length of two football fields and exhibit more than 20 commercial and military airplanes. These include the original Boeing 727, 737 and 747, the 787 Dreamliner, Air Force One, Concorde and the B-17, B-29 and B-47 bombers. The Pavilion will also offer a café and playground.

The Museum of Flight is one of the largest air/space museums in the world, with more than160 significant airplanes and spacecraft.

(http://www.museumofflight.org)