A strange rock formation with numerous legends trying to explain it.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

This Danish castle is supposedly haunted by a woman too independent to not be a witch.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

This picturesque medieval monastery guards a small trove of historic treasures.

An ethereal glowing blue ocean cave in Croatia.

What looks like a link in Gondor's early warning system is actually a centuries-old Italian fortress.

A medieval Italian village is fighting depopulation with this vibrant annual street art festival.

Geometry and mystery come together in an epic show of octagonal masonry.

The construction of a new church near Venosa was started in the 11th century, but never finished.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

The sunlight passing through the opening of this huge cave system creates a magical effect.

This historic stone bridge has an entire neighborhood clinging to its sides.

Antique frame collection with 2,400 frames.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

The oldest botanical garden in the world that technically isn't the oldest.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.