There IS a langley hall, or was, maybe they renamed it.....where the video of the Wright brothers and them showing off their invention to a ton of people..

There is no "Langley Hall" at the Smithsonian National Air and Space Museum in Washington, DC; this name might be a confusion with the Steven F. Udvar-Hazy Center in Chantilly, Virginia, which is a separate location. The museum's primary location is on the National Mall, and exhibits are spread across multiple floors. On the first floor of the DC museum, you can find the Lockheed Martin IMAX® Theater and many exhibits, while the Steven F. Udvar-Hazy Center is the large annex that houses aircraft like the space shuttle Discovery and the space shuttle Enterprise. 

Washington, DC museum (National Mall)

• Location: On the National Mall, near 6th and Independence Avenue SW.
• First Floor: The first floor features the Lockheed Martin IMAX® Theater.
• Other exhibits: The museum has exhibits on the first floor and other floors, some of which may be temporarily closed due to renovations.
• Requirements: Free, timed-entry passes are required to enter