Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

This abandoned hospital is one of the most haunted places in Costa Rica.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Follow the original medieval paths that wind through this intriguing section of the city.

Famously misunderstood wonder of the ancient world

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A whimsical bridge adorned with decorative dragons.

This abandoned Slovenian military barracks has become a punky-political art squat.

This one-time health resort was used by aristocrats around the world.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Ship-sized kinetic sculptural fantasy.

Macabre astrological automaton clock dating to the late 1400s.

France's most famous cemetery, with some of its most curious tombs.

Catacombs turned marketplace.

The vast, legendary catacombs hold secrets much stranger than stacked bones.