I found this museum difficult to follow. I was also over it halfway into the second floor. It is much bigger than you expect and because there is only a general trajectory holding the whole flow together, it jumps around a lot from place to place with lots and lots of disparate info that I had a really hard time keeping straight. There are lots of video presentations, which I do think helped tremendously, especially as I got through floors one and two and was sick of reading itty, bitty little info cards on the sides of pictures.