The entire experience is awesome. You may explore many regions of it, and the summit has a breathtaking view. You should put on a protective covering over your shoes before climbing the stairs because the first location you reach has a lot of mirrors. You can see the entirety of New York City from the top-level view.
I arrived just before dusk, which is great since you can watch the region transform from day to night. The area with all the balls, where children may run around the room with adults, is another highly entertaining spot.