And WWII soldier art
The Wright brothers exhibit was really interesting
The satellites and telescopes were all shapes and sizes
My favorite exhibit was the Saturn V exhaust cones. So big they used mirrors to illustrate the shear size of the array
I got to finish up at the Lincoln Memorial, which also gave me the excellent view of the Washington Monument above.
Along the way, there were so many other things to see, including the Whitehouse, WWII Memorial, Natural History Museum, and countless other parks, museums, and generally great people watching!