This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

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

Giant, friendly pelicans in Central London, the most unlikely of places.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Eighty million natural history specimens call this gargantuan museum home.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Famous landmarks and structures from across Italy fill this miniature park.

A complicated contraption for telling time by the moon.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Most of Britain's gold reserve was secretly stashed here after the start of World War II.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The red letters in the literary pavement leading to the library form a mysterious code.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

A gorgeous medieval library where the books are kept in chains.

London's smallest police station is barely the size of a phone booth.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

This natural gas vent certainly earns its name as the smallest volcano in Italy.