Philo’s words still carry great power today. Of all the various wonders of the ancient world, only the Pyramids of Giza still survive, thus we cannot see them for ourselves.

Around 225 B.C. a Greek engineer, Philo, produced a list of seven temata—“things to be seen”—that are better known today as the Seven Wonders of the Ancient World: the Pyramids at Giza ...

History Channel series “Ancient Aliens” returns Friday, February 7 at 9 p.m. ET with all-new episodes. Stream the season premiere for free with a Philo 7-day trial.