Located on the first floor of a historic building in the delicious Penn Quarter, this sophisticated store sells hot-off-the-design-floor furnishings: Eames sofas, Zanzibar stools, "orange slice" chairs, and "petits fours" benches. The clever designers are from around the world; the prices are out of this world. Besides furniture, Apartment Zero sells everything else you need for the home, from light fixtures to bed linens.

Copyright: Excerpted from Frommer's Washington, D.C. 2009, (c) 2008, Wiley Publishing, Inc.

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