This volcanic plug boasts the longest recorded history of any Scottish stronghold.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

This enchanting mountain plateau celebrates spooky local folklore.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Enjoy coffee and cake while viewing antique medical equipment at this unique cafe.

This modern New Zealand attraction honors ancient forms of astronomy and scientific understanding.

Home to some of the world’s darkest skies, this project blends ancient Māori culture with world-class astro tourism.

The most remote tree in the world is more than 170 miles from its nearest neighbor.

Watch the seas clash at the place where according to Maori tradition, the spirits depart for their journey to the afterlife.

Largest Kauri tree in New Zealand.

A semi-abandoned village destroyed by U.S. bombings during World War II dominates the valley of Turano.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

This retro underwater observation tower would make the perfect lair for a sea-loving villain.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

An alchemist's "magic door" stands in the middle of a Roman park.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Florence’s mother built a stairway down to her daughter’s coffin so she could comfort her during storms.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

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

Lithuania's outdoor sculpture trail of wooden folk art.