The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Two stunning 17th-century libraries and a cabinet of curiosities.

The only rotating bar in New Orleans has been slowly spinning since 1949.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Medicinal spa created with the discharge from a geothermal energy plant.

A taste of the macabre Tokyo's ritzy shopping district.

Stroll through a wonderland of stupendous moss-covered trees.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

Enormous lake at the bottom of a unique cave system.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Elevated freight railway turned wildly successful urban park.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

Dramatic river bend surrounds a natural red-rocked pedestal.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This massive library holds what was once the largest book collection in the world.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.