I'll be honest, I had little clue about what the "Antikythera Mechanism" was. Although I'd heard of it, I didn't know who built it, when it was built or why it was built.
As it turns out, in 1901, divers off the coast of the Greek island of Antikythera found a device on board a shipwreck dating back over 2,000 years. Not much was known about the "device" until, in 2006, scientists carried out X-ray tomography on what remained of the complex artifact.
According to the recent Nature article Ancient astronomy: Mechanical inspiration, by Jo Marchant:
The device - which sounds like something that belongs in a Dan Brown novel - is an ancient celestial computer, driven by gears to carry out the calculations and dials to accurately predict heavenly events, such as solar eclipses. The technology used to construct the device wasn't thought to be available for another 1,000 years.
According to Adam Rutherford, editor of Nature, the science journal has a long standing relationship with the Antikythera Mechanism. In a recent email, Rutherford pointed to a video he had commissioned in the spirit of continuing Nature coverage of this fascinating device. But he hadn't commissioned a bland documentary about the history of the Antikythera Mechanism, he'd commissioned an engineer to build the thing out of LEGO!