<p>I second cap’s suggestion of the FDR memorial. One of my favorites. And of course the Vietnam War memorial is awe-inspiring. </p>
<p>For anyone interested in being near greatness, you can’t miss the National Archives, to see the originals of the Constitution and the Declaration of Independence. I go to pay my respects almost every time I visit DC. If you don’t see more than a few people on the front steps, that means there’s pretty much no wait at all.</p>
<p>For anyone with access to a car, I also second an earlier suggestion of the Air and Space Annex, which is outside the District. If you like the Air and Space Museum, you can’t go wrong with the Annex. Wonderful place.</p>
<p>We usually stay in Crystal City. There’s a Marriott where you just through the underground stores to the metro. Easy, and weather resistant.</p>