Here's a sobering graphic comparison of the world's tallest, never-built skyscrapers, a visual index that includes everything from the Chicago Spire to 1937's abandoned Palace of Soviets. The list of never-built supertalls spans Moscow to Mumbai, though, perhaps unsurprisingly, Dubai has the greatest number of started-and-failed megaprojects in the survey. Have a look, over at Curbed National. [Curbed National]
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