The Enola Gay which dropped the first atom bomb on Hiroshima to compel the Japanese to end WWII.
The Space Shuttle Enterprise which was used to test landings, but was never sent into space. While the official posted rules said no food or drink we calmed a fussy toddler with liberal access to the baggie of Cheerios and a sippy cup. This lead to a quieter and more pleasant experience for all the visitors at the museum today. While I wouldn't allow any food in an art museum, it seemed pretty safe here. Next week's trip is likely to be at the National Portrait Gallery and the little ones will stay home, leaving all the famous paintings safe from grubby fingers.