Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

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

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

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

Known as one of America's most beautiful public restrooms.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

A beautiful but toxic fountain of mercury.

A subterranean display of public art and architecture.

Walk in the footsteps of the gods and straddle two tectonic plates.

On a trail in Portugal's Barão de São João National Forest, a pile of faces look up at hikers from the forest floor.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Dictionary Johnson’s favorite feline.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

France's national museum of scientific and industrial instruments.

The celebrated eyesore created by starry-eyed sweethearts.

An abandoned train station in Munich constructed for the 1972 Olympic games.

This supermarket offers shoppers a window into the past alongside their groceries.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.