One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The stunning interior of this Gothic church is covered in ornate gold details.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

A little-known castle set in a nature reserve.

An undulating wicker beast looms peacefully atop a sand dune in Belgium.

You would never come across this tiny green oasis if you didn't know it existed.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A huge old mansion full of thousands of toys, each there to be used and played with.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

Somewhere there is a giant who can no longer poop, but now travelers can stay inside his anus.

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

A fantastical bed and breakfast with magically unique rooms.

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

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Theme park featuring miniature replicas of European monuments.

Hiding the longest subterranean river known in the world.

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

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

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