The Museum of Flight might have recently crossed the threshold of being a world class aviation museum. The Museum has expanded in recent years to now featuring an enclosed aviation pavilion that houses such famous planes as Air Force One, a British Airlines Concord, and the first Boeing 747 ever built. In addition to this part of the museum, there are a number of really interesting exhibition halls featuring aircraft from WWI and WWII, and even spacecraft! The museum hosts a number of activities throughout the year, has one of Seattle's best gift shops, and a ton of friendly docents ready to help answer your questions. Expect to spend between 2 and 3 hours here.