18. Antikythera Mechanism
This truly amazing ancient Greek artifact, some 2,000 years old, can fairly lay claim to be the world’s first analog computer. It’s actually an astronomical and calendar instrument and it was found on a shipwreck in 1902. This highly sophisticated mechanism includes 37 gears which would have allowed it to follow the cycles of the moon and the sun. The science underpinning the Antikythera mechanism was lost and nothing as advanced was made again until the 14th century.
17. Alien Skulls
Archaeologists discovered the skeleton of a boy aged between 18 months and two years at a site in Crimea. The site is Sarmatian, from a civilization that lasted for some 900 years from the 5th century BC. What was remarkable about the remains was the bizarre elongation of the skull, giving it an alien appearance. In fact, this was a common Sarmatian custom and suggests that this boy, buried in the second century AD, was destined to be a warrior. The Sarmatians apparently elongated the skull by artificial means in the belief that it would encourage warrior-like qualities.
16. Nazca Lines
The intriguing Nazca Lines, best seen from the air, are in the Nazca Desert of southern Peru. Experts believe these massive groundworks, up to 1,200 feet long, were created over a 1,000-year period between 500 BC and 500 AD. As well as geometric patterns, the works include representations of birds, monkeys, llamas and jaguars. Researchers have not found a conclusive explanation of the purpose of the lines, but theories include the idea that they were made to be seen by the gods in the sky or that they are related to astronomy.