A rare example of World War I trenches from the British front.

A little sculpture with a large wardrobe.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

This abandoned Belgian fortress is purposefully being left to nature.

Meet the bronze beloved pet to a family of famous peeing statues.

Hiding the longest subterranean river known in the world.

Theme park featuring miniature replicas of European monuments.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

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

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.

This annual harvest parade features intricate floats covered with fruits, vegetables, and seeds.

A long-closed church turned into a saintly skate park.

A nuclear reactor created for Eisenhower's "Atoms for Peace" campaign is now used for research at a Dutch university.

A tiny house showcases the busy life of a local gnome.

It's forbidden to dig within this ancient Roman fort hidden beneath a playground.

A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

Once the world's biggest telescope, it was later used as a coat hanger by a famous Dutch astronomer.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

Watch the local Netherlands birds from inside this giant eco-egg.

This artificial ring island was built to hold cubic tons of polluted dirt.

This museum is filled with an eclectic collection of unique inventions.