Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Village situated on a narrow volcanic escarpment.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

The monumental home of Prussia’s eccentric "Cannon King."

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Wandering this ancient burial place offers a glimpse of the afterlife in the fresco-adorned tombs of an ancient Etruscan civilization.

A stately castle in the northern Italian countryside has been restored after years of neglect.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

This sprawling bookstore spans four floors and has more than a million books in stock.

A magnificent place to see authentic paleolithic cave paintings that are an astounding 33,000 years old.

This ancient Visigothic church might hide an ancient treasure.

This precariously perched fortress was once ruled by a crow-worshipping baron.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

Spend the night in this formerly abandoned traditional Scottish village.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Notorious artist squat renovated into legal studios.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.