10 Unsolved Historical Mysteries That Still Confuse Experts

2. The Antikythera Mechanism

In 1901, divers found a rusty metal object in an old shipwreck near Greece. Later, experts discovered it was more than 2,000 years old—and it worked like the world’s first computer!

It had gears and dials that could track the sun, moon, and even predict eclipses. How could people from so long ago build something so advanced? It’s still a huge mystery.