I went here (
Steven F. Udvar-Hazy Center right next to Dulles Airport) back in April, but never posted a few of the pics I took. This is a truly remarkable place, enormous in size and filled with many aircraft from the SR-71, to the Enola Gay, and even the space shuttle Enterprise.
As you walk in you are greeted with these pointed right at you
Its a great place, and I highly recommed visiting it. I have several other pictures if you would like me to post them.