This hulking rock formation balances on a pedestal that is 3 feet by 17 inches.

An Egyptian-revival style film house in Boise, Idaho.

When in Idaho, sleep in a giant potato.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

In 1857, the Mardi Gras parade tradition began at this intersection.

The stone labyrinth in this New Orleans city park was laid to symbolize healing in the wake of Hurricane Katrina.

After the oysters have been shucked, and the restaurant's been shuttered, the terrazzo sidewalk from the 1940s is all that remains.

An ordinary rancher stumbled upon one of the world’s largest collections of Pliocene horse fossils.

Some 46,000 years ago, a volcanic eruption led to a flooding event that carved this short canyon with steep vertical walls.

At the site of the most dangerous crossings on the Oregon Trail, a museum explores the complex history of westward migration in America.

This Idaho state park boasts the tallest single-structured sand dune in North America.

A little piece of Paris in the sultry south of the U.S.

Striking images of New Orleans history, including colonizers, soldiers, Klansmen, scientists, sharecroppers, and more, are depicted in frescoes that line the walls of this transportation hub.

This quaint museum in a long-running workshop is dedicated to a fixture in New Orleans lighting.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Shop for books in the New Orleans house where William Faulkner once lived.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

Introducing the Green Fairy to her fawning masses.

A snapshot of the city's fascinating voodoo culture.

The second oldest continuously operating bar in Louisiana.

A museum and shop on Bourbon Street located in the French Quarter.