Extremely isolated Silk Road caravanserai in the middle of nowhere.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

A pub that is literally in the middle of nowhere, but continues to do business.

A 15th-century granary that played the role of futuristic slave quarters in the world of 'Star Wars.'

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

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

Behemoth, cannon-like telescope operated by generations of Irish earls.

The ancient tomb acts as a calendar that keeps perfect time.

Rock-cut chamber at top of an outcroup, reached by a mountain stairway of forty steps.

Splashes of blue in an otherwise monotonous lunar landscape.

Once an impressive link to Afghanistan’s Buddhist past, now a sad reminder of intolerance towards other cultures.

Highly unusual subterranean stupa and adjacent cave monastery.

This iconic fortress was once the crown jewel of Haiti's national defense.

The royal seat of Henri Christophe, a formerly enslaved man who became Haiti's only king.

Gigantic unfinished stupa and the world's 2nd largest bell.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Death rituals and sacrifice inside a Peruvian megalith.