A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

The woman who helped save 15th-century France was born in this humble home.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

This church sits upon a peaceful hill and a long, turbulent history.

This bunker site once briefly used by Hitler now features locals’ accounts of German occupation.

The world's largest boar is a huge steel titan found at a French rest stop.

This "social palace" housing complex created a relatively stable and self-contained worker's society... for a time.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

The grave of the famous painter is marked by a simple stone in the ground.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

The geographic midpoint of the Dutch-speaking part of Belgium.

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

The birthplace of the titular coat and related products celebrates its claim to fame with a statue of a coat.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

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

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.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

The patron saint of cats founded this stunning Romanesque church in the 7th century.