Secrets - Season 2

The giants of Easter Island are some of the most recognizable statues on Earth, and some of the least understood. Why were hundreds of these enormous figures built and then toppled to the ground? Our experts reveal a story of extraordinary struggle.

The Great Pyramid of Giza is the last of the Seven Wonders of the Ancient World still in existence and one of history's greatest mysteries. Follow experts Mark Lehner and Peter James as they attempt to solve the puzzle of the monument's construction.

Queen Nefertiti was the most powerful woman in ancient Egypt. But few would know anything about her if it weren't for her statue. Follow our team of experts as they sort through the clues to solve this ancient secret.

Follow the hunt for the truth about the most famous lost treasure of them all: the Ark of the Covenant.

Follow the high-tech examination of an ancient spear believed by many to have magical properties.

Blackbeard's ship, Queen Anne's Revenge, sank off the North Carolina coast, bringing an end to her six-month reign of terror in 1718. Now, nautical archaeologists, historians, and scientists are studying the remains of the wreckage.

The Great Wall of China is more than just a part of history, it's part of the world's geography, a sprawling, massive edifice of mud, reeds, and billions of bricks. But why did the Chinese go to such lengths to build it? And what secrets have enabled it to survive for over 2,000 years? We unravel its mysteries and rewrite its complex history through groundbreaking science and pioneering drone technology. This is how the wall was built, what its real purpose was, how it has survived multiple earthquakes and attacks, and how long it really runs.