An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A French museum of wrought iron.

An ancient ossuary in Rouen.

His "Lionheart" is entombed separately from the rest of his body.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Order a boozy baba au rhum at the oldest patisserie in Paris.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

A man throwing a giant severed hand towers over Antwerp’s main square.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

These ancient ruins include a stadium dating back to 400 BC.

Incredible labyrinth of man made caves.

This historical Netherlands fortress still bears the marks of its single siege.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This windmill has been grinding pigments for traditional paints for more than 200 years.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This 17th-century house has a long and colorful history.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

Science meets wall art to highlight the beauty of famous mathematical equations.

A former plague hospital turned medical museum.