Experts reveal what it would take to build Egypt's Great Pyramid today.

Experts use the latest tech and modern-day science to explore rebuilding the Colosseum.

Rome's Colosseum is the most famous stadium on the planet, and it took cutting-edge engineering and a fallen emperor to build it; experts use the latest tech and modern-day science to reveal if building it a second time would be just as difficult.

According to the Bible, Noah's Ark was a world-changing engineering feat, and it took cutting-edge construction to build it; experts use the latest tech and modern-day science to reveal if building it a second time would be just as difficult.

Experts use the latest tech to reveal if building Rome's aqueducts a second time would be as deadly.

Rome's Pantheon hides the secret to the Roman Empire's power, and it took dangerous, cutting-edge engineering to build it.