Really enjoyed this observation deck. Building high tech and elevator ride was even cool. Weather wasn't the best, but still worth it. Try not to go if it's raining as it might be closed due to lighting. Our time slot was for 6pm when we arrived it was closed due to weather. They told us to come back that night, they wouldn't change our ticket to the next day and said only way we could change was to go through trip advisor. It wasn't worth time and energy, so came back later that night. Did feel admission misleading as site says Free digital souvenir photo..... Not exactly true, as you get a code in order to access picture, however when you go on the site says you need to pay $5.00.. So haven't gotten our Free souvenir photo.... That's the only issues we had.