A spherical "micro-nation" in the heart of Vienna.

The topiary maze at the Habsburg hunting lodge.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

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

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

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

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

A giant bug impaled on a 75-foot-tall needle.

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

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

This bike path traverses the treetops.

Brussels' favorite peeing boy has a sister.

This bike path was sunk below water level for maximum wonder.

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

A fantastical bed and breakfast with magically unique rooms.

A little sculpture with a large wardrobe.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

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

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

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

Lavish royal estate punctuated with heated greenhouses.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.