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

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The sign at the garden gate reads: "These Plants Can Kill."

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

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

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

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

A kaleidoscopic warehouse-maze of handmade neon signs.

Three hundred illuminated pillars form an “artificial forest” in Medellín.

A bibliophile's heaven that contains hundreds of bookstores, offering over a third of secondhand books for sale in Tokyo.

Tokyo’s only Ainu restaurant serves Indigenous food from northern Japan.

An eerie, derelict amusement park in Berlin.