Just behind the Capitol in Washington DC, and close to the Supreme Court, you can find the Library of Congress.
Photo Spot Details
This place is probably in every tourist guide talking about Washington, for a good reason. As a photographer (and as a tourist), you shouldn’t miss an opportunity to go there. The building (outside and inside) is wonderful. Depending on the time you have, you can peak a guided tour or not. Tripods are probably forbidden inside. Be sure to bring a wide-angle lens. A little tele-lens (~70/80mm in full frame) can also be interesting to capture details in the wall.