A tunnel with windows, so you don't miss out on the impressive views.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A calm and comfortable place to hang out with cats and kittens up for adoption.

A serene but haunting memorial to protective wetland lost, the absence of which directly damaged the Lower 9th Ward following Hurricane Katrina.

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.

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

An abandoned underground bunker not far from downtown New Orleans.

The first patented shaved-ice machine heralded a snowy wonderland of iced treats at a favorite New Orleans summer shack.

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

It's clear this abandoned Art Deco gem was no ordinary cleaners.

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

This unique shop is full of memento mori art, antique medical equipment, secret society paraphernalia, and historical relics.

An otherworldly musical haven in The Big Easy.

This gold mine–turned–swimming hole is the perfect summer picnic spot, immersed in nature and history.

A little sculpture with a large wardrobe.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A medieval military street hidden beneath a charming French fishing village.

This mountain trail inspired Nietzsche to complete his magnum opus.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

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

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

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A prime example of New Orleans' unique architecture these early 20th century homes were built to look like steamboats.