City of Lost

Located in the centre of Burgundy, in the heart of Morvan, hides one of the jewels of European heritage: Bibracte, the largest and richest of the fortified cities of the Gallic era.

In the heart of Morvan, the French region of Burgundy, deep in a forest, lies a hidden city that had been dormant for 2,000 years. It's called Bibracte, the most important oppidum in all of Gaul, rediscovered in the middle of the 19th century. That is where the Aedui, a Gallic tribe allied to the Romans, once built a fortified city on top of a mountain.

Deep in the jungle, the lost city of Tikal holds the dark secrets of the Maya, and now, a new investigation uncovers how it grew into a megacity home to 100,000 people, and why it was mysteriously abandoned.

Special access to cutting-edge archaeological investigations reveals the secrets of the long-lost city that was once the world's largest and richest. Using new evidence, experts discover what Babylon looked like and what caused its downfall.

Machu Picchu is a beautiful old city in Peru. It was forgotten for many years, but now many people are visiting it. Some people think that too many visitors may not be good for the city. What will happen to Machu Picchu?

More than 2,000 years ago, the thriving city of Petra rose up in the bone-dry desert of what is now Jordan. An oasis of culture and abundance, the city was built by wealthy merchants whose camel caravans transported incense and spices from the Arabian Gulf. They carved spectacular temple-tombs into its soaring cliffs, raised a monumental Great Temple at its heart, and devised an ingenious system that channeled water to vineyards, bathhouses, fountains, and pools.

This is the first discovery of an entire gladiator school with an adjacent cemetery for dead fighters recently found in Austria. Located in the former Roman imperial residence of Carnuntum, only a small portion of the large area has been explored - an area that was located on the important trade routes that connected east and west, north and south. At the collapse of the Roman Empire, the city was abandoned and no settlements were established, allowing researchers to study the period as it was. The gladiator school may not be the only treasure to be found on the site of the lost city of Carnuntum - there may be many, many more.

The downfall of the powerful Maya city of Palenque continues to mystify archaeologists today; now, investigators gain rare access to explore lost tombs to reveal the truth behind this legendary city and the mystery behind its enigmatic queens.

The sprawling city of Persepolis was the capital of the first imperial civilization that conquered most of the known ancient world; now, experts use advanced forensic archaeology to reveal the secrets behind Persia's mysterious and dominating metropolis.