This World War II airfield enjoys a second life as a public park.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

The largest of Denmark's seven mysterious round churches stands on an island in the Baltic Sea.

Once a granite mine, this beautiful lake is the perfect place to cliff jump and zipline in Denmark

Northern Europe’s largest castle ruins sit precariously on an island cliffside.

Legend says this rock spire is the finger of a witch who wanted to throw the Faroe Islands towards Iceland.

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

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

Built in 1925, this glass-roofed shopping arcade is known for its modernist Italian architecture.

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

The evocative ruins of a medieval village.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

Micro-nation based around a nine-story high illegally built tower.

A natural wonder in south Denmark.

This impressive chasm is one of the longest natural underground cavities in the world.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

This fairy-tale, neo-Gothic church in the Azores is a world of magical realism.

Europe's oldest still-operational tea farm also boasts a spectacular view.

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.