An abandoned Byzantine fortress and notorious prison.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

A two thousand year old brothel uncovered in Northern Greece.

A sharp sculpture made of thousands of pieces of jagged glass.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

These ruins in Volvi were once at the intersection of the Eastern and Western Worlds.

An ancient octagonal weather station named for the eight Greek gods of wind.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

A museum to a cave explorer whose tragic death was a media sensation, and whose corpse became a tourist attraction.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A full-scale replica of a 1774 colonial settlement in Kentucky.

The remains of this visionary community can still be found much as it was a century ago.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

One of the few surviving "Wigwam"-themed motels.

Moonbows over Kentucky.

The world's longest known cave system.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.