Went to the Native American Museum. That is much newer than some of the others and well kept. There were also fewer people there. DD enjoyed it so much, especially all the statues and videos.
Then off to the air and space museum, which I thought had not been well kept. The part she loved was the hands on part about lift and how things worked.
We had an early day in. All our feet hurt from all the walking. So, we had dinner at the Crystal City mall and back for a swim.