A British museum has rebuilt a 2000-year old computer initially used by the Greeks. The ruins of this computer were found 100 years ago and only recently has it been possible to study the device well enough to reconstruct it. Interestingly enough the original and the new reproduction were both made from recycled parts.
Check out the 2000-year old computer article at Wired or this article at the Guardian. And watch the video below. Cool stuff!