2100 years ago, Greek engineers created a unique mechanical computer, using gears with astonishing precision. This mechanism remained buried under sea in a shipwreck for 2000 years, until it was found again near the Greek island Antikythera in 1901. The real purpose of this computer was not found until 2006, where scientists used X-rays to make a 3D image. The mechanism was used to predict celestial events and eclipses with incredible precision.
In 2010, nature site sponsored by Digital Science made a fully functional replica of this ancient mechanism out of Lego parts. Watch the following video and read more about the Antikythera mechanism.