These 5,000-year-old cave paintings provide a glimpse into prehistoric Finnish life.

An ancient tree that was once the favorite of a young Swedish royal.

This castle was once considered as an option for the Royal Family's alternate residence, but you may know it better from the 'X-Men' movie.

Was this cave created by Hercules's wrath, the devil, or volcanic activity?

This 2,000-year-old stone maze is one of the oldest in the country, but its purpose is still a mystery.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

Gnomes have their very own bonsai-landscaped settlement on a university campus.

This ancient castle has been abandoned since the Edwardian conquest of Wales.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

Legends of treasure and spirits flow from this this fairy tale-like oasis.

This museum of Viking vessels allows visitors to take a replica out for a spin.

This patch of land is home to Sweden's largest burial mound, allegedly belonging to a mythical king.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

A statue dedicated to the antihero of the Nibelung legend.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

A monument to Lenin has been transformed into a statue of everyone's favorite black-helmeted, fool-choking Sith Lord.

A medieval house with mysterious alchemical inscriptions on its facade

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

These wondrously illuminated caverns extend under the mountains of the Fukushima Prefecture.