A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

There’s a hidden military meme engraved on the World War II Memorial.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

The world-record holder for the longest bridge stretching continuously over water.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

The crumbling remains of a 19th century fortess.

This strange, small castle on the bayou has withstood the test of time and weather.

This Art Deco airport was once deemed “the air hub of the Americas.”

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

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

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

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

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

An abandoned warehouse turned art sanctuary in New Orleans.

Colorful, cheeky signs spill out of legendary New Orleans folk artist Dr. Bob's Bywater studio warning you to "Be Nice—Or Leave."

An otherworldly musical haven in The Big Easy.

Before becoming a public park, this spot was a shell midden, a fort, and an amusement park.

New Orleans' famous cemetery, located on the site of a former race track.

A haunting, yet lovingly hand-hewn potters' field full of graves that flood with each heavy rain.