Ah! No wonder all the elevators are on the outside of the building! The inside is reserved so the Queen can walk up 7000 stairs. My personal favorite aspect

Ah! No wonder all the elevators are on the outside of the building! The inside is reserved so the Queen can walk up 7000 stairs. My personal favorite aspect is that the best view from the observation deck is looking straight down through the glass floor, and the look of sheer terror from people afraid to walk on it (while the kids jump up and down on the glass).