Dubai, Shanghai Wrold Financial Center/Tallest observation deck in the world

Shanghai Wrold Financial Center (SWFC --上海环球金融中心) has the tallest observation decks in the world:There are 3 observation decks in SWFC. The height of its lowest observation deck (观光大厅) is 423 m (1,388 ft), on the 94th floor, the second is 439 m (1,440 ft) high, on the 97th floor, named "Observatory Bridge" (观光天桥), and the highest (观光天阁) is 474 m (1,555 ft) high, on the 100th floor.[19