The lost city of Olous is a great metropolis submerged in the Mediterranean. Now, archaeologists uncover its secrets using CGI reconstruction.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history. Who built this structure and what was its purpose?

In 373 BCE, the Greek city of Helike vanished. Now, archaeologists believe they've found the ruins of the great lost metropolis.

The tomb of Alexander the Great mysteriously vanishes. Investigators use CGI to reveal where his tomb lies and what it may look like.

The Dendera Temple is one of Egypt's best-preserved temples. Experts decipher its mystifying zodiac images and the ceremonial events there.

Why was Palmyra built in the Syrian desert and how did its inhabitants survive? Years after its destruction by ISIS, experts return to the site.

Experts investigate the truth behind the mythical city of Xanadu.

Experts uncover the engineering secrets behind lost coliseums of Rome.

Experts investigate mysteries behind the ancient city of Samarra.

Experts use cutting-edge tech to unlock the secrets of Tintagel Castle.

Experts investigate secrets behind the ancient Egyptian city of Abydos.

Experts investigate an ancient temple monument on an Egyptian island.

Experts explore the ancient Maya city of Palenque and its enigmatic queens.

Experts uncover the mysteries behind the ancient Sumerian city of Nippur.