CIA Kryptos Sculpture's Encrypted Message

CIA Kryptos Sculpture s Encrypted Message
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On the grounds of the CIA headquarters in Virginia, there is an unusual sculpture built back in 1990. What makes this sculpture so widely talked about is what it actually is—a large, twisty canvas with 4 coded messages across it. The artist that built the sculpture has given 4 clues to aid in its solving, yet only 3 of the 4 have ever been solved, making that last one seemingly unattainable, and the most renowned unbroken code in the world.