An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

The secret medieval communication system will whisk your words above the noise of the crowd.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

A fake medieval village in the middle of Turin.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

One man is on a singular quest to name an island after a famous hip-hop artist.

Thousands of well-dressed mummies below a monastery.

The site of the tragic isolation of Nipmuc Native Americans left to perish in King Philip's War.