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.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A naturally beautiful, seemingly bottomless deep blue spring.

Where giant ships go to die.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

The world's largest neutrino telescope searches for secrets of the universe at the South Pole.

Natural time capsule containing an alien ecosystem.

Stay in your own little bubble.

One of the tallest buildings in Africa provides a great view of Johannesburg's unique geography.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

This historic observatory was established to keep shipwrecks from littering the Cape of Good Hope.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

The remains of diamond fever taken over by the desert.

The true depths of these stunning Moroccan caves are unknown.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

This small group of sand dunes manages to pack in a strange rainbow of colors.

The world's largest ship graveyard is the product of decades of corruption.

A geological bull's-eye visible from outer space.

This underwater cave in Madagascar is home to what is thought to be the country's largest fossil graveyard.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.