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1. National Zoo( Jessie Cohen / Baltimore Sun / September 11, 2008 )
Take a trip to the National Zoo to pay a visit to D.C.'s second most famous couple, Mei Xiang and Tian Tian, the giant pandas. One of the most widely recognized animals on the planet, giant pandas are also one of the rarest, as only four American zoos house the species.
Address: Smithsonian National Zoological Park, 3001 Connecticut Avenue N.W.