Iran's colorful terraces are a rare geological masterpiece.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

This crescent-shaped sliver of sand is a magical haven for a herd of feral horses.

Old and brave breed of warhorses known for their elegant, curved ears.

The grassy landscape is home to the world's last truly wild horses.

A palatial horse museum outside Shanghai is home to the most pampered horses in the world.

A stunning two-story timepiece within a medieval Brick Gothic church.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

The underground sanctuary of a mysterious ancient Roman religious cult contains an exquisite traditional fresco.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

The oldest known university in the world is in Fez, Morocco.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

An impressive century-old, to-scale topographical map of Guatemala.

An eccentric aristocrat brought these Australian natives to their current Scottish home.

Some of the world's only freshwater seals live in one very special lake in Russia.

In paradise, feral pigs have claimed an island all to themselves.

Morocco's Argania trees are infested with nut-hungry goats.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

The USSR’s Conquest of Nature lead to the domestication of many moose—no squirrel.

A tiny chapel clings to a precipice above Germany’s gemstone capital.