When going to Washington try the following and you will enjoy:
A tour of the National Cathedral with high tea. The cost is $25.00 per person. I think this is conducted daily @ 1:30 pm. The tour is one hour and 15 minutes long with high tea on the observation floor to follow. My 13 year old daughter loved this. They also have special events, lectures and varied tours. Check the website. It is easy to navigate. Visit the old post office, clock tower observation deck. This is free and you can see the whole city and take many pictures from the top. It is not nearly as crowded as the Washington Monument--no wait. Also, you may participate in the bell ringing on Thursday night at 7 pm if calling ahead. We used DC Tours for a twilight tour of all the monuments. Pick up and drop off at the hotel was provided and plenty of time was available for picture taking along with a friendly and knowledgable driver. The tour went from 7 pm to 10:30 pm. Check out the free shows at the planetarium at the Air and Space Museum. While we visited,it was at 11:30 am lasting about 20 minutes and the girls really enjoyed this. The National Archives along with the Declaration of Independence, Constitution, and Bill of Rights now has the Magna Carta on a borrwed temporary exhibit. Contace your congressman or senator as there are special tours for the Bureau of Printing and Engraving through their offices without arriving in the morning before the sun does. Remember, contact them early. That's it.