A mechanized clock where a man fights off a dragon, crab, and rooster.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

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

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

Hiding the longest subterranean river known in the world.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

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

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

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

A little sculpture with a large wardrobe.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

The Devil’s own choice when he needs a drink in Brussels.

Cozy basement bar sports an inventory of over 2,000 beers.

Brussels' favorite peeing boy has a sister.

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

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

A wonderfully kitsch bookstore the size of a supermarket.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.