A natural history wunderkammer in the middle of the desert.

Despite a recent paint job, the factory still sits empty.

America's only nuclear missile silo open to the public.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

One person’s lost luggage is another person’s treasure.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This remote British Imperial telegraph relay outpost drove men insane.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

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

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

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

An early 20th-century bullring converted into a modern shopping center.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A fountain standing as a testament to a doomed alliance.

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

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

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

Giant topiary dog once played a role in a terrorist bomb plot.

A marvel of Byzantine engineering under the streets of Istanbul.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.