The latest in a series of long glass bridges suspended at terrifying heights.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

A Buddhist temple to honor insects that died for science.

This family tattoo parlor has been inking religious pilgrims in the Middle East for 700 years.

How would you like to dine in the same room where some of the Titanic's victims were embalmed?

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A tongue-in-cheek arcade where the games are based on everyday life.

Traveling collection of amazing automata.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

Certain traditions prevail on the least-visited island of the Aran Islands.

A psychedelic labyrinth on the San Francisco bay.

A little known Colombian theme park of giant curiosities.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

The largest of London's subterranean rivers and once a mad, bad center of London life.

This South London cemetery holds the remains of more than 15,000 people.

An unusual round church in London with a Templar past.