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  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.
  • The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world.

The National Postal Museum, located opposite Union Station in Washington, D.C., in the building that once served as the Main Post Office of Washington, D.C. from 1914, when it was constructed, until 1986. The museum houses many interactive displays about the history of the United States Postal Service and of mail service around the world. Also on display is a vast collection of stamps. The museum houses a gift shop and a separate stamp shop, along with exhibits on the Pony Express, the use of railroads with the mail, the preserved remains of Owney (the first unofficial postal mascot), and an exhibit on direct marketing called, “What’s in the Mail for You,” that produces a souvenir envelope with your name printed on it and a coupon for the gift shop. As a Smithsonian museum, admission is free.