The original goat tower, the one that started it all.

Caves that can't seem to quit producing the remains of prehistoric humans.

The tallest residential building in Africa is an unsettling Brutalist monolith.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

Largest cave system in Africa.

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

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

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

Over a million items cram the shelves at Africa's largest shop of used and rare books.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

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

Hidden in the hills is a mysterious stone structure, known only to a few.

These giant volcano sponges in Antarctica are thought to be the world's oldest living animal, at 15,000 years old.

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.

The largest piece of no man's land left on Earth.

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

Largest sub-glacial lake ever discovered.

Considered the most remote point in the entire world.

Southern Ocean waters and glacial forces transform the Antarctic ice into these stunning bridges and caves.

Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

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

Fire meets ice at the southernmost volcano on Earth.

An abandoned whaling station on an active volcano offers hot springs in Antarctica, surrounded by ruined giants of industry.