Building 3 and 4 are still closed but 1 and 2 are open plus the theaters!
Yes, it's open again. They were remodeling in the main building though and I'm not sure if they're complete yet but you can definitely see most exhibits still.
Not all the building's were open I think only 2 were open
About half the exhibits were closed in July. You have to use the back entrance
Thanks! Your answer is awaiting moderation.