The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

A surreal museum of extraordinary industrial objects.

A wonderfully kitsch bookstore the size of a supermarket.

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

The highest point in Belgium is a staircase to nowhere.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

A fantastical bed and breakfast with magically unique rooms.

When you're a great Russian Tsar, even your vomit gets a statue.

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

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

Because sometimes you need to make a batch of frites even when the stores are all closed.

A Museum of Psychiatry in a still-operating mental institution.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

One of the deepest indoor swimming pools 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.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

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

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

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

Lavish royal estate punctuated with heated greenhouses.

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