Step into the cool deep past and unknown future of who begat who.

The most powerful waterfall in all of Europe.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

Dig for your own trilobites in this goldmine of invertebrates.

The largest greenhouse in the world is home to over one million types of plants.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

The longest living non-clonal organisms on Earth.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

These azure waters were thought to lead to the Mayan Underworld.

A gargantuan crystal kingdom.

A spectacular cave and a beguiling lake.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

This tangled English forest looks like something right out of a fairytale.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Most-visited and most-photographed slot canyon in the American Southwest.