I have only been up in it once and I was very youn...

I have only been up in it once and I was very young. I've tried going up in it multiple times since and haven't been able too. They only run carts up to the top every few hours, they run out of tickets quickly and they are closed a lot. Call in advanced if you want to get a ticket or else you may not be able to get one. As of now, the museum is still under construction.