Scenic Relaxation on MSN

How did ancient people build something this huge?

This video shows the ancient archaeological site of Teotihuacán, Mexico, where massive pyramids rise above a wide valley ...
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Researchers believe they finally figured out how the Great Pyramids were built — and no, it's not aliens

For decades, the construction of the Great Pyramid of Giza has sparked one of history’s biggest mysteries and plenty of wild theories. From secret lost civilizations to alien intervention, many people ...