The worlds fastest super computer, getting it's picture taken with me. (ORNL, 2009)
@compi You know, that's a good question. There is something here on the decom but not much on what happens afterwards. https://www.hpcwire.com/2014/06/05/remembering-kraken/
FWIW when I was there, I wasn't allowed to take pics of certain bits of hardware (CPU liquid cooling manifolds, for example) - I'm kind of assuming it went back to Cray for recycling or re-sell to other customers.