Willis Tower Observation Deck: Overlooking Chicago, revealing the layers of the city

Willis Tower, also known as Sears Tower, is one of the landmark buildings in Chicago. As the tallest office building in Chicago, a central city in the United States, it was also the tallest building in the world from 1974 to 1998. There are a total of 110 floors, and the observation deck for tourists is on the 103rd floor. On a clear day, you can see four states in the United States. However, it is recommended to come at night, the night view is really super beautiful, providing multiple viewing points, each angle can bring different visual enjoyment. What's interesting is the 'floating window' near the edge. The entire 'window' is outside the building, with a full glass floor, 412 meters from the ground. When you first go up, it does require some courage. Remember to check the weather and sunset 1-2 days in advance; Fastpass is very useful, avoid waiting for the elevator for 1 hour, go up to the 103rd floor in 2 minutes, note that Fastpass will bypass the waiting area museum on the ground floor, you can watch it after you finish; The observation deck has four suspended glass boxes on the outside of the building, each photo is limited to 90s, you can queue multiple rounds, the ordinary ticket queues for about 30 minutes, Fastpass queues for 5 minutes, but it is not recommended to check in unlimited times, you will be persuaded by the staff