This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

Cathedral carved out of salt, located a mile below the earth's surface.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

This shuttered power plant is now Turkey's first industrial archaeology museum.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

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

Ancient serpentine sacrifice holder that has stood the test of time.

Mediterranean castle on a tiny Turkish island.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

A fountain standing as a testament to a doomed alliance.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

The most metal church of all time was built in record time because of an international, pious pissing contest.

A sacred lake with thousands of sacred carp and a biblical history.

This museum was invented in a novel before being made real by the author.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Roman ruins, natural methane fires and a lovely beach.

A Turkish monastery tucked into a cliff wall.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

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

A marvel of Byzantine engineering under the streets of Istanbul.