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Taipei 101, Taiwan

When this skyscraper was completed in 2004, it was the tallest in the world and was named after its location and number of floors. The Burj Khalifa knocked it off the top spot and despite being 508m, it’s no longer in the world’s top 10 tallest towers. But it’s still worth visiting, especially for its New Year’s Eve fireworks display. A public observation deck is on the 89th floor.