This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A submerged archeological park still holds the wonders of a Roman Sodom.

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

A little known Colombian theme park of giant curiosities.

A psychedelic labyrinth on the San Francisco bay.

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

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

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

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

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

Ancient human, animal, and geometric figures drawn in the earth.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The remnants of an early American attempt at missile defense.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

The magical, mossy forest that inspired Princess Mononoke.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

Thousands of well-dressed mummies below a monastery.

The mummified remains of Dashi-Dorzho Itigilov, Russia's most important Buddhist.

Self-mummified monk who wears sunglasses and has become a gecko hatchery.