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

This medieval castle was painted pink as part of a now-abandoned children's theme park.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

A beautiful maze marks where three countries meet.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Scale model of St. Peter's Cathedral (Rome) in the middle of a small Dutch town.

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

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

Descend into the tunnels to experience the life of a coal miner.

A luxury hotel housed in a former 15th century Gothic church.

What was once a bustling mining installation is now a bustling hub of contemporary art.

Relics from as far back as the 16th century are on display in a city known for its playing card industry.

This ghost town in Belgium will lose its street art when it ceases to exist.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Most prolific publishing house in the 1600s open to the public.

These ruins reveal the remarkably intact layout of a Roman marketplace.

This Belgian palace was long the domain of priests and aristocrats but is now being turned into an art commune.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

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

Lavish royal estate punctuated with heated greenhouses.

This modern arts center is built around a gem of late-Baroque architecture.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."