When the rain falls, this drain system turns into a musical instrument.

Started as a kitchen garden, now the second largest botanical garden in the world.

A small but immensely extravagant palace built by the "Night King."

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

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

An eerie, derelict amusement park in Berlin.

Scattered around Atlanta are little doors with big charm.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

An abandoned 1920s school with a mysterious history.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

A sculptor's dream castle turned fantastical ruin.

Rotting dome home spotted near Chapel Hill, North Carolina.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

The cruel trial of a 13-year-old boy inspired the creation of this now abandoned reformatory.

Continuing the tradition of the dime museum in style.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The celebrated eyesore created by starry-eyed sweethearts.

Macabre astrological automaton clock dating to the late 1400s.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.