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Open daily 10 a.m. to 5:30 p.m. (Closed December 25)
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.
Central to the Great Seal stamp’s design, the eagle symbolizes unity, virtue, strength, and independence on this special delivery airmail sheet.