Discover what the relics of an oasis reveal about the fall of the civilization that built Petra.

See how the majestic stadium looked 1,900 years ago.

The arena where gladiators trained, and how they made their grand entrance into the Colosseum.

Despite being in a Hindu country, the Taj features a great deal of Muslim symbolism.

See inside the famous Indian monument as never before.

Travel deep into the chambers of the Egyptian mega-temple to find a hidden city and uncover its mummies.

The truth behind Karnak's hypostyle wall, where Ramses II covered up the work of his father, Seti I.

Each warrior in Emperor Qin Shi Huang's Terracotta Army is unique. Here's an inside look at how the army was built.

Archaeologists believe the body of China’s first emperor, Qin Shi Huang, lies in a mysterious underground burial complex.

More than 170 skeletons are buried under Machu Picchu -- what do their deformities say about the mysterious city?

The ancient Incan civilization used quipus, or knotted cords, to keep records.

Witness the grandeur of Stirling Castle and learn about the unexpected guests buried just below it.

Scotland's Stirling Castle is linked to the adventures of two larger-than-life heroes.

Tour the most famous prehistoric monument in the world, and discover the graves that lie below.

A 600-year-old French manuscript reveals clues tying King Arthur to Stirling Castle.

Clues reveal what the Sphinx Temple looked like more than 4,000 years ago, and its secret ties to the yearly equinoxes.

See inside the famous Indian monument as never before.

Despite being in a Hindu country, the Taj features a great deal of Muslim symbolism.

See how the majestic stadium looked 1,900 years ago.

The arena where gladiators trained, and how they made their grand entrance into the Colosseum.

Discover what the relics of an oasis reveal about the fall of the civilization that built Petra.

Prynt can instantly print photo-video hybrids from your smartphone. How well does it actually work?

Two regular firefighters who got frustrated with weak laces on their boots took to their garage to dream up something that would hold up. But do they hold up to their claim of "indestructibility?"

This invention was inspired after the inventor saw construction crews using fragile home appliances on build sites. He’s got a partner who made the Coffeeboxx look pretty rugged, but is it?

The first step is the pitch, and the panel pulls no punches if they aren't sold on an idea right out of the gate. But, they will rely on the tests to form their final opinion.

Brook and Brian can’t wait to test this unique grill. JR, the inventor, boldly claims this wood burning stove – that can work in an environment – get reach 1000 degrees in five minutes. He’s going to be held to his word.

Check out the helicopter you fly with your brain.

Liquid Off is off to a decent start with a viable expert test, but the team knows it is how the consumer perceives it that guides whether Marc makes an investment.

Passing the expert test, Bondic moves on to face consumers. After a few tries the testers seem to get it, but what does Marc think?

The RC Ski is a device that can supposedly control a watercraft remotely, allowing enthusiasts to wakeboard alone. Watch Brook put it to the test!

The judges love the advanced prototype called the "Bionic Boot." The boots mimic an animal's leg and claims to allow the user to run 25mph, but Marc's concern is safety.

Straight out of high school these makers have created a Roboarm which they hope will revolutionize the prosthetics industry.