Across the globe, urban planners have beautified some of the most basic (and essential) city structures: subway stations. Through murals, sculptures, temporary installations, or just fancy signage, they have helped turn otherwise drab transportation hubs into dazzling, and sometimes even whimsical, works of art. From Tom Otterness' miniature bronze sculptures in New York City to Dubai's jellyfish-like chandeliers, here are nine underground masterpieces that can't be missed. Click here to view our slideshow.

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