The ancient Egyptians used levers in building the pyramids. Although it is not known exactly how they erected the great obelisks, it's a pretty sure bet that they used levers in some way.

How did ancient Egyptian obelisks end up all over the world? How did ancient Egyptian obelisks end up all over the world? Do you have poor posture at work? So did the ancient Egyptians Do you have ...

In 1995, a NOVA team dared to demonstrate firsthand what has mystified historians for millennia: how to raise an obelisk using only materials and techniques the ancient Egyptians might have used.

Many ancient Egyptian metropolises ... plowing his fields on the site of ancient Heliopolis. The last remaining obelisk is visible in the upper left corner.(©Look and Learn/Bridgeman Images ...