A place with a nice view to DC?

Definitely try the Old Post Office tower. Free, few to no lines, right downtown, and you can hang out as long as you want. Only downside is limited winter hours. See a href="http://www.nps.gov/opot/planyourvisit/hours.htm" rel="nofollow"http://www.nps.gov/opot/planyourvisit/ho…/a