The Roman city of Ostia was once a vital harbor town. Today, Ostia is covered in sand. Examine the reasons for its demise and explore recent excavations, which rival those of Pompeii.

The Greek gods acted like a dysfunctional family, often displaying near-human frailties. Visit magnificent monuments to see how the gods' changing faces reflected the advancement of the Greeks.

As a stream of immigrants crowded into New York's downtown slums from the late 1800s to the mid-20th century, the area known as Five Points nurtured the rise of the American crime bosses.

Recent excavations at Teotihuacan, site of Mexico's Great Pyramids, reveal that they were not built by Aztecs as originally thought, but rather by an unknown earlier civilization.

In ancient times, the tattooed, painted-blue Celts were Europe's most feared warriors. They were also brilliant artists, farmers and metal workers. Examine this puzzling paradox of blood and beauty.

Once upon a time that cackling crone on a broomstick was considered a healing woman who harnessed nature's secrets for humanity's good. What happened to transform her into a Christian symbol of evil?