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

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

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

A motel dedicated to Southwestern nostalgia.

A spiritual vortex among the red rocks in Sedona.

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

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

An acoustic anomaly with a mysterious cause.

One part antique store, one part curiosities hodge-podge.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The land is home to swimming ponies and a legendary 18th-century treasure.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Largest Roman Catholic church in North America.

Art deco landmark on the outskirts of Washington, D.C.