These free-roaming horses were once destined to disappear from the land.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

A mysterious spirit totem at the edge of Navajo lands.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Miniature art that tells an enormous story.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

See massive fossils that are over 200 million years old in northeastern Arizona.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

This "flat geyser" bubbles up out of the ground periodically like a disappearing river.

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Giant granite sculptures representing family on the northern coast of Spain.

This enchanting natural park is a magical example of a temperate rainforest in Europe.

Blue-green pools and smooth stones comprise one of Spain’s most idyllic hidden wonders.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

Bacteria and algae give the salty water its bubblegum hue.

A charming Spanish village sits atop this natural limestone overpass.

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

An isolated village literally built into the crevices and rock formations of a mountain.