Mountain where Jesus was first tempted by the Devil.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

Venue for strange sideshow displays and musical acts.

Southern California’s Theme Park Beginnings.

A repository of Pasadena history.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

One of the most accessible undersea plane wrecks in the world.

One of the deepest blue holes in the world.

They squeal, they nosh, they look like predators.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

An abandoned swimming pool decays on the outskirts of Berlin.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

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

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An eerie, derelict amusement park in Berlin.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

One of Europe's largest supercomputers is housed inside of a disused chapel.

A stately palace has been converted into the world's largest cannabis museum.