Lines from a walking song are etched into a rock in Natural Bridge State Park.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

A remote sandstone plateau named for a legendary cattle rustler.

The world's largest natural arch was forgotten for over 50 years after its discovery.

A boulder carved into the shape of the cosmonaut's head.

Dating back to 1812, this is the oldest racecourse in the Southern Hemisphere.

The world's largest ecosystem of its kind is home to South America's only native species of bear.

These circular ruins are all that remain of a 17th-century Arctic whaling outpost.

Neither bomb blasts nor heartbeats escape the giant ears of this super sci-fi Arctic outpost.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

This 13th century Gothic brick castle is the largest in the world by surface area.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Oaxaca's recently restored "forgotten Dominican convent."

Located in the shadow of a volcano, this church is tied to the culture of the Purépecha people.

The remains of an Aztec school and various intriguing artifacts lie below a modern cultural center.

The 19th-century hacienda house is filled with Aztec sculptures.

This church turned museum is dedicated to the last Mexica ruler, whose remains were allegedly buried under the altar.

Myanmar's Mount Olympus atop a 2,500-foot volcanic plug.

Ancient structures used to make and preserve ice in the deserts of Persia.

The remnants of this unusual bridge await an uncertain fate.

Perched above the bustling town of Kerak is a sprawling, ruinous castle that has witnessed nearly a millennia of Levantine history.

The shortest in the world, this landing strip stretches a mere 1,312 feet before steep cliffs on either end plunge into the Caribbean.

Τhis feline monument commemorates fallen soldiers on a field that saw many, many battles.

It was meant to help transport wounded soldiers to a secret underground hospital.