The iconic remains of the original Academic Hall that burned down in 1892.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

Eighty million natural history specimens call this gargantuan museum home.

Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Robot jockeys ride their humped mounts to victory as part of a 21st-century twist on an ancient desert sport.

Home to what was once considered the largest gate in central Asia.

Witness traditional silk production in the Uzbek city that's been a hub of sericulture for over a thousand years.

Final palace complex of the last of 29 Kokand rulers.

The Avenue of Mausolea is a series of grand palatial tombs.

It's as if the herds walked straight out of a fairy tale into the Missouri wilds.

Giant granite rocks standing end-to-end like a train of circus elephants.

Erosion and time have created a naturally-formed water park.

Sloth rehabilitation center in the jungle of Costa Rica.

The northernmost point of continental Africa—or is it?

Ancient barriers wrap around what was once an important stop along the Silk Road.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

Light still pours into the ruins of this ancient Islamic observatory.

European castle ruins in an American state park are actually the product of death and grief.