Graham visits Gunung Padang, an Indonesian archeological site, to find proof of a lost civilization...

In Cholula, Mexico's oldest continuously-inhabited city, the journalist inspects the world's largest...

Graham discovers a fascinating pattern that may connect the spectacular megalithic temples of Malta,...

Few scholars have investigated the Bimini rock formation off the coast of Miami, once fabled to be t...

At Göbekli Tepe, the oldest known megalith in the world, Graham questions if simple hunter-gatherers...

Graham visits ancient mounds in North America and wonders if they contain astronomical significance...

The author returns to Turkey to explore Derinkuyu, an ancient underground city and survival bunker t...

In the ancient geological sites of North America, Graham envisions an apocalyptic event that may hav...

From ancient footprints to mysterious earthworks, Graham continues his journey into the past alongsi...

Graham searches for answers to the questions behind ancient works of art, including 25,000-year-old...

Accompanied by local experts, Graham compares ancient oral traditions and learns Sacsayhuamán in Per...

Graham learns of a stone-shaping technique now lost to history, and explores how ancient Amazonians...

Although thousands of miles apart, Graham considers the possible link between the shamanistic use of...

At Mexico's Temple of the Sun, Graham experiences the extent of the Mayans' astronomical expertise a...