Washington, D.C., sites wow first-timers and travel vets
LET'S START with the White House. Public tours are available, but you have to do some homework first: You'll need to request free tickets in advance through your congressman. For more information, call 202-456-7041 or go to www.nps.gov/whho/planyourvisit/white-house-tours.htm. Evan Vucci / AP
