Two ancient Buddhist temples crown this dramatic rocky pinnacle.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

One of the smallest towns in the United States.

An enchanting rocky island of scraggly baobabs surrounded by an ancient sea and sprawling salt pans.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

This precariously perched fortress was once ruled by a crow-worshipping baron.

The world's longest tunnel with an undersea section.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

An ancient stone fortress considered by many to be the eighth wonder of the world.

The Acropolis of this little-visited Mayan archaeological site offers great views of Chiapas’s Lake District.

A lawless town deep in Death Valley was famous for its riches and death rate.

This spectacular track has run continuously since 1882.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

The world's shortest funicular ferries beachgoers a whopping 128 feet from clifftop to shore.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

A 2,000-year-old engineering wonder hides beneath an Italian town.

Wander among the abandoned ruins of this once-powerful medieval town.

This fortress played a key role in the battle that would ultimately give rise to the Maratha Empire.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

This cliff-face port is considered a masterpiece of mining engineering.

This peculiar Italian elevator runs both horizontally and vertically.