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Devoted to the history of America's mail service and the hobby of stamp collecting.
Highlights William H. Gross Stamp Gallery, the world’s largest stamp gallery; full-size, Freightliner semi-truck cab cutaway; three vintage mail planes; stagecoach; 1931 Ford Model A postal truck; replica of a railway car; videos; computer interactives; and hands-on, family-friendly activities
10 a.m.–5:30 p.m. daily
Closed December 25
Admission is FREE
2 Massachusetts Ave., NE
Street parking is available near the museum and all-day paid parking is available at Union Station, located next to the museum.