if you plan on coming here, give yourself a good 3 to 4 hours at least to explore everything. The main exhibit on the bottom floor took almost 2 hours to go through, and the video thats being played on the floor with the cafetaria can take just as long. Over all, i loved it. Theres alot of info here, plenty to look at, and alot to learn. Its set up a little weird, since you walk in then have to go downstairs, but otherwise it think everything flows nicely. The parking is a bit annoying since its wrapped all the way on the other side, make sure to cut through the science museum, but of course that costs $11.