World's Coolest Observation Decks
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Whereas similar 1960s-era structures were built in conjunction with World’s Fairs and national celebrations, the Vienna Donauturm was erected as part of…a horticultural expo (the 1964 International Viennese Gardening Show, to be exact). Today, the Donauturm is Austria’s tallest freestanding structure—and one of the world’s tallest towers. After a speedy 35-second elevator trip to the observation deck, visitors can gaze out on this cosmopolitan capital city from both open-air and glass-enclosed overlooks, nearly 500 feet high in the sky.
Observe This: Also thinking about a cruise on the Danube and a spin on the giant Ferris wheel? Combination tickets are on sale at the tower’s shop. —Jeff Koyen