Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

This Manchester laundromat is hiding something.

The final resting place of the "father of special effects."

The site where two doves fell in love.

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

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A historic canal winds through a unique, swampy landscape.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

The only subterranean ping pong table in Atlanta.

For more than 15 years, this downtown dive bar has hosted fiery outdoor “iron pours.”

Rare and classic books by Black authors are the focus at this independent bookstore in a historic Atlanta neighborhood.

For the last eight decades, this curious shop has been ridding Atlanta of bad juju.

No passport is required to eat around the world at this elegant restaurant.

An abandoned munitions storage facility with a rich architectural history.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

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

A hidden oasis just two minutes from downtown Atlanta.

A little-known mural reveals the hydrological reason for Atlanta's founding in this location.

The world's first time capsule lies behind a welded steel door in Atlanta.

Developers built a Walmart around one family's plot and constructed a mausoleum in the parking lot.

Secret gardens just a few miles from downtown Atlanta.

This stone is a marker of one millionaire's personal vendetta against gravity.