Kryptos is a sculpture located on the grounds of CIA Headquarters in Langley, Virginia. Installed in 1990, its thousands of characters contain encrypted messages, of which three have been solved (so far). There is still a fourth section at the bottom consisting of 97 characters which remains uncracked. This webpage contains some information about the sculpture, including some photos collected from around the web, some photos and rubbings of the sculpture taken by your intrepid webmistress, links to other ar
Source: Elonka’s Kryptos Page