The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The fairy tale castle of the "fairy-tale king."

Medicinal spa created with the discharge from a geothermal energy plant.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Abandoned railway line circling the city of Paris.

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

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

The world's only museum devoted to the wonders of fluorescence.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

France's most famous cemetery, with some of its most curious tombs.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A church of bones, decorated with 40,000 human skeletons.

These fantastically named natural pools look like something out of a Scottish myth.

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

A taste of the macabre Tokyo's ritzy shopping district.

An eerie, derelict amusement park in Berlin.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

An exquisite tunnel of cascading flowers.