If you're looking for a modern cipher that is still yet to be cracked, check out the Kryptos sculpture are the CIA headquarters in Langley, VA.
https://en.wikipedia.org/wiki/Kryptos
Look at Passage 4.
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If you're looking for a modern cipher that is still yet to be cracked, check out the Kryptos sculpture are the CIA headquarters in Langley, VA.
https://en.wikipedia.org/wiki/Kryptos
Look at Passage 4.