January 4, 2011
In Washington DC, I think the favorite by virtue of visiting it the most often with out-of-town relatives and guests is ... the Lincoln Memorial. With, of course, the Vietnam memorial nearby.
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I like museum visits, and it's sometimes more fun to go with a group because often one runs into people who know more about the exhibit/artist.
Easy walk liker and museum frequent visitor (at least to the Smithsonian).