A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A huge musical instrument played by the ocean.

The rocks in this arid basin leave trails of movement behind them.

A fiery crater has been burning in the Karakum Desert since 1971.

World's first "penitentiary," meant to be humane, drove men insane.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A church of bones, decorated with 40,000 human skeletons.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

An emerald-green grotto just a short trip from Austin.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The drama of nature in full effect in this Nevada State Park.

Most-visited and most-photographed slot canyon in the American Southwest.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Rippling sand dunes frozen in the Arizona rock.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This lab's maddening silence is good for business but bad for sanity.