You can't think of this as your usual museum. A lot of the exhibit is having people understand the big, open spaces that run underground.

People may be apprehensive about going underground, but it's not frightening. It's exciting. Once you get down there, you forget you are underground. It's like a big parking garage where the air is so fresh and clean.

We are going to re-create a 1940s theater underground where the cart pulls up to the movie marquee with lights and facade. You will go inside and watch clips of some of those movies.

If people get to meet them face-to-face and see how amazing they are, they are much more likely to be interested in their plight in Africa and Asia,

We're putting together the pieces of the puzzle of how people who have been gone for hundreds of years lived. You make your best guess on what you can find and we're finding a lot.

It's really popular because it's such a great deal. People see really easily how they can use the membership over the course of the year. It really pays for itself.