A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

"The Most Boring Road in the State."

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

All that remains of a gigantic earth-moving machine.

This might just be the TARDIS of bookstores.

The world's longest known cave system.

The mounds at this site were reconstructed with the help of archaeologists and historians.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

The oldest continuously occupied public building in the United States.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

A small side chapel in Santa Fe's basilica is home to the oldest statute of the Virgin Mary in North America.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Legends surround this jagged rock formation in the New Mexico desert.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

This spectacular track has run continuously since 1882.