The Beale Ciphers have challenged thousands of cryptanalysts for the past hundred years.  The Beale Ciphers consist of three ciphers and are seemingly unbreakable.  While most professionals would give up after several unsuccessful attempts, people still continue to try and break them.  The ciphers remain a mystery while hiding a very rewarding treasure.  The motivation to break these ciphers may simply lie in the wealth one could acquire if they cracked the ciphers.  However, the human mind is very curious, and with each uncovered step, our curiosity increases.  The Beale Ciphers possess a lure due to the fact that one of the ciphers has already been broken.  This has provided hope for current professionals and amateurs, making them believe that the key can be found.  On the other hand, history has shown that even the most difficult ciphers (i.e. the Great cipher) can be cracked.  People still attempt to break them because the fame associated with such a discovery would be equally as rewarding. Ultimately, these factors have kept the Beale Ciphers under constant scrutiny to this day, despite how difficult they are to solve.

Image "Keyhole" by StudioTempura, Flickr (CC)