An island made out of shells, including a cemetery.

The shortest in the world, this landing strip stretches a mere 1,312 feet before steep cliffs on either end plunge into the Caribbean.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

This amazing ancient cave was kept secret for seven years to protect it from the public.

This 100-foot tall bluff located in the western plains of Kansas overlooks a massive reservoir.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

The largest geyser field in the southern hemisphere is a spectacular sight.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

Abandoned since 1998, this train station has become an oasis for urban explorers.

The tallest mountain in mainland Netherlands isn't actually very tall.

This megalithic tomb was crafted by a mysterious civilization that settled the island of Pantelleria.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

The birthplace of the very first human resident born in Antarctica.

Russian Orthodox church built on an Antarctic island.

One of only two civilian settlements in the desolate lands of chilly Antarctica.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.