Flames have been burning within this mountain for more than 2,500 years.

Roman ruins, natural methane fires and a lovely beach.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

One of the most exquisite Lycian hilltop citadels in Turkey.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

A Turkish ghost town abandoned in a population exchange with Greece.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

This elaborate temple was built around one of the Buddha's teeth.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

One of the world's tallest flagpoles.

This museum explores iconic buildings and the cultural heritage of Malaysia in miniature form.

An exploration of Malaysian heritage through the lens of traditional textiles.

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

Macabre astrological automaton clock dating to the late 1400s.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The yawning maw of this pagan visage is said to bite off the hands of liars.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

Paris' linguistic guide to the international language of, yes, love.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

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

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Mountain where Jesus was first tempted by the Devil.