A kaleidoscopic warehouse-maze of handmade neon signs.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

Half of a waterfall goes into the river while the other half seems to disappear.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

A 16th-century horror show built in a lovely Italian garden.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

This odd 1930s shop remains stranded in time and shrouded in mystery.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Remnants of a storybook amusement park hidden behind a strip mall.

An abandoned water park overtaken by the dunes.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.