The Smithsonian's National Postal Museum has started the construction to expand the Capitol Hill museum with a new gallery showcasing more than 20,000 objects.
The museum is expanding at its current location next to Union Station. It is taking over the former Capital City Brewery restaurant space to create the new 12,000-foot gallery.
The William H. Gross Stamp Gallery will be named for its primary benefactor. Gross is the founder of Pacific Investment Management Company. He donated $8 million to pay for the expansion.
Museum officials say the new gallery will include thousands of stamps, a wall of windows featuring stamp art, a welcome center, a postmaster's suite featuring special exhibits, and new education spaces.