Aboriginal artists carved these unique figures into sandstone.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

This Ottoman-era Greek Orthodox Church was built to honor Agia Pareskevi, a Christian saint.

An ancient site that has revealed incredible artifacts including portions of the Themistoclean Wall.

This living labyrinth made entirely of thorns is filled with art.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

The mouldering manses of wealthy colonials still pock the streets of a Curaçao neighborhood.

This island hill is strewn with boulders carved by shipwreck victims from the age of sail.

In paradise, feral pigs have claimed an island all to themselves.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

Does this 10-foot-tall statue carved into a rock face depict a king afflicted by a skin condition or a Buddhist figure?

To gaze upon the visage of Sri Lanka's biggest Buddha, one must first pass through the Tunnel of Hell.

A hidden three-foot-wide house separates these two regal churches.

These ornate arches show how the course of the River Thames has changed.

This ancient Egyptian obelisk still bears the wounds of World War I.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

A large replica of a monumental Roman inscription is located on the side of this museum.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

An 18th-century post box used to alert the church of sick and ailing foreign pilgrims.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.