A motel dedicated to Southwestern nostalgia.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This famous archeological mystery may be an ancient example of movable type.

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.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

An ancient city hidden in the heart of the Sierra Nevada mountains.

Largest collection of mounted dinosaur specimens in the world.

Ancient human, animal, and geometric figures drawn in the earth.

Home with Gothic windows featured in a famous painting.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

At a mile long, the Fort Madison Bridge is the largest double-decker swing-span bridge in the world.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

The magic's in the hole!

An alchemist's "magic door" stands in the middle of a Roman park.

What appears to be an ancient Roman temple is actually a Catholic church.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

Water and windows define this defensive Italian well.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

An ancient Roman temple first dedicated to an emperor's wife is now a church.