World's first invisible skyscaper can disappear before your eyes

See the world's first "invisible" skyscraper

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The Tower Infinity skyscraper going up outside of Seoul, South Korea, will be invisible — sort of. The glass-spired skyscraper, which recently received a construction permit, will incorporate optical technology to make it appear as if it's not really there during the day. Here's a preview of the award-winning design.

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