A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

A natural arch offers panoramic views of Yangshuo's karst hills.

The once highest point in China blends symbolic design with a kick of adrenaline.

This ancient Chinese observatory still contains early astronomy technology.

The most famous location in China was home to whole dynasties worth of imperial rulers.

The most visited, and possibly most controversial, museum in Germany.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A little sculpture with a large wardrobe.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

France's most famous cemetery, with some of its most curious tombs.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Famously misunderstood wonder of the ancient world

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The celebrated eyesore created by starry-eyed sweethearts.

Macabre astrological automaton clock dating to the late 1400s.

This massive blockhead sculpture hides an entire library.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.