As an informative museum, this is only meh.\nAs a fun way to spend a few hours in Vegas, this is five stars.\nSo, figure out what you want of your day and you won't be disappointed.\n\nThe museum has a nice amalgamation of things, but they aren't necessarily curated in a way that helps explain context. (i.e. why is a 21st century book on Atomic Cocktails mixed in with all the 1950-s era materials? Why is there a stuffed mountain lion atop one of the the fake rocks? I'm sure there is a reason - help me understand.)\n\nOthers have indicated that the museum is slightly biased. I would say that the museum is tremendously biased. And, that's ok provided you keep that in mind. They do not even try to hide the difficulties of waging war with nuclear weapons, but, there is minimal discussion of atomic waste or decisions over which areas of the world (outside of Nevada) were selected and why for testing. An example of propaganda? In one location, a giant bore bit is displayed with a sign that suggests that, were it not for underground testing, we would not have had the equipment needed to rescue the Chilean miners.\n\nThe Area 51 exhibit is ridiculous, but I would totally go through it again\n\nIf you read all the signage, it will take you several hours to work through the museum. And, a warning that the movie has VERY bright lights, sound, and even wind. It scared the crap out of me.\n\nI had a blast (no pun intended) and would recommend it to anyone interested in seeing unusual sites. But, as a museum with the Smithsonian name on it, it has some deficits as an educational facility.