Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Cat art as far as the eye can see.

A unique work of automotive art calls this shopping center home.

This statue of a studious young woman stands at the site of Leuven's first college to accept female students.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

A tiny metropolis resides inside this student housing complex.

A bridge that has seen many reiterations over its lifetime.

Not many houses move across borders, this one did it twice.

A tribute to smugglers and the Butter Wars.

This building once stood at the center of a butter war.

A former customs station on the border of Germany and the Netherlands.

A reconstructed World War I-era communications array that was once hidden in plain sight.

This residence straddles a border between Belgium and the Netherlands.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

Only a few walls remain of the last church the Pilgrims used before they sailed to North America.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

Banished from town, this local jester concocted a clever return.

A replica of a 17th-century map of the stars stands in the courtyard of a Belgian university.

This plaque marks the former home of one of the first women physicians in the Netherlands.

The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A small statue commemorates a centuries-old event that still hangs over the people of Leuven.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

A set of seven houses, each built in a style that represents a European country.