An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Tubing through a cave lit with glowworms is a magical underground experience.

Macabre astrological automaton clock dating to the late 1400s.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

Famously misunderstood wonder of the ancient world

A church of bones, decorated with 40,000 human skeletons.

The only quarter of the Old City not dedicated to a major world religion.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

An ancient capital city that dates back 3,000 years and harbors many surprises.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

The deepest metro station in the world.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

This derelict superstructure was a very important warning system for the Soviet military.

One of the most poignant ruins of the Chornobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chornobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

A nightmare for the claustrophobic lies hidden in Southeast Asia.