The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Europe’s most powerful hot spring supplies the surrounding region with hot water.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Three columns of volcanic rock shoot out of the ocean.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

A monument in the shape of the mighty conch honors the history and symbolism behind this shell.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

These winged Maya figures are the subject of speculation and conspiracies.

Still standing despite its considerable slant, this tilted lighthouse has become a local symbol of resilience.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

Bridge that died in war and was resurected.

Come for the flowers, stay for the bats!

Highly spherical boulders on the shores of New Zealand.

This strange geological landscape erupts with sudden bursts of water.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The "lovely red Vega" of the legendary record-settling pilot.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.