A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

The World Wide Web was created in this nondescript corridor at CERN.

A symbol of friendship between the mountainous regions of Switzerland and Bhutan.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

A historic observatory precariously perched at the "Top of Europe."

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The steepest classic funicular in the world glides along a dizzying incline.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

A fifth-century temple improbably built into the side of a cliff.

Beautiful views and Roman-style statues on the Italian coast.

A huge enchanting public park just outside the ancient walls of Rome.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

Art and armour fill every inch of this rich kid's Italian villa.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A lover's walk between hilltop towns, decorated with graffiti love notes.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Secret refuge and museum of the Duke of Florence.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

A fairytale island floats in the middle of Italy's little-known Lake Orta.