National Geographic explorer and scientist Albert Lin travels to Israel, in search of the lost fortunes of the mysterious Knights Templar. The Knights Templar, warrior monks, ruled the Holy Land through blood, god and gold. Using cutting-edge technology, Albert investigates the hidden Crusader city and the secret tunnels that lie beneath it to discover their lost world, their gold, and the secrets that made them so ruthlessly successful.

National Geographic explorer and scientist Albert Lin travels to Micronesia, in the heart of the Pacific Ocean, to uncover the ancient island city of Nan Madol. Exploring the tombs, temples and ritual sites, all built upon man-made islands now shrouded by centuries of jungle growth, Albert discovers not just a city, but an entire ocean continent spanning thousands of miles.

National Geographic explorer and scientist Albert Lin travels to Colombia, South America, to find out the truth behind the legends of El Dorado. Exploring the lost city of Cuidad Perdida, Albert discovers that the truth is far more exciting – and discovers not just a city, but an entire civilization. Now, for the first time, Albert reveals the extent of this civilization and its 'cities in the clouds.'

For thousands of years before Stonehenge was built, the same area was inhabited by a mysterious, ancient people. Albert Lin goes on an epic adventure across England and Scandinavia to discover their secrets while a team of archaeologists uncover a unique stone structure that just might have been the reason Stonehenge was built.

National Geographic Explorer Albert Lin travels to Petra, Jordan, to discover the origins of the famous city. He finds out that it was built by the Nabataeans, a mysterious civilization who learnt how to survive in the desert. He tracks down evidence of their cities and temples, and reveals that the ancient city of Petra was part of a much bigger network than he ever imagined.

National Geographic Explorer Albert Lin travels to the mountains of Peru to discover the origins of its most famous site, Machu Picchu. Using LiDAR technology Albert finds proof of the people who came before the Inca, and treks high into the mountains to find their homes and ceremonial sites. Gathering the evidence, Albert reveals that the Inca city may have been inspired by another, even older civilization.