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Open daily 10 a.m. to 5:30 p.m.
Admission is always free!
2 Massachusetts Ave., N.E. Washington, DC 20002
The museum's main entrance is located on the corner of First Street and Massachusetts Avenue NE. Other entrances have variable hours.
The Chicago flights were a publicity victory. Helpful as it was, that would only hold off an insatiable Congress for a short time. Congress wanted results, and expansion was the way to provide those results.