Elaborate tile work in this railway station tells the story of Portugal.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

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

The broken skateboards that became a poignant memorial to a murdered skater.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Eighty million natural history specimens call this gargantuan museum home.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

The enormous diamond-shaped building packs a trove of academic and literary treasures into one futuristic space.

Model Trains and Much More in Hamburg.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Fourteen sculptures showing the development of a fetus stand outside a hospital for women and children.

A famous hotel houses an impression collection of mini dioramas and giant doll houses.

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A creepy, deserted mock Arabian village can be found in the middle of the Qatari desert.

Some of the ancient-looking huts among these strange rock formations aren't ancient at all, but built as part of a movie set.