Antikythera Mechanism
This ancient device is believed to have been created by Greek scientists somewhere between 150 B.C. and 100 B.C. The device, which mimics an ancient computer, was found in the wreckage of a 2,000-year-old ship off the coast of the Greek island of Antikythera. The device has been able to predict astronomical positions as well as eclipses. "Nothing comparable to it is known from any scientific text or literary allusion," wrote Derek J. de Solla Price, a historian at Princeton University.