Art Nouveau painter Alphonse Mucha spent 18 years creating these monumental paintings of Slavic history and mythology.

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

Former hunting lodge of a duke who was an avid collector of impressionist works.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

The world's tallest bridge is also possibly the most elegant.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

This army of concretions is an unexplained geological phenomenon unlike anything else in the world.

France's third-largest necropolis offers a peaceful respite from a busy port city.

This garden houses the remains of the ancient Greek port of Marseille.

A suspended footbridge allows for traversing this gorge carved through the French Alps.

A small house sits between two huge rocks, with its back to the sea.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

Once known as one of the finest tourist railways in Europe.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

An ancient Thracian city where fire rituals were practiced on the largest cult altar in Southeast Europe.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.