Interested in Crypto? then you should read this interesting blog post on Kryptos (see photo).
http://www.wired.com/threatlevel/2010/11/clue-kryptos/
Kryptos is a legendary “sculpture” with an embedded secret message hidden by the designer that has yet to be uncovered.
Read about Kryptos here; http://en.wikipedia.org/wiki/Kryptos