High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

France's most famous cemetery, with some of its most curious tombs.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

This gallery is home to everything from antiques, to ancient tribal masks.

A home covered with elaborate mosaic and other pieces of art.

This ancient Egyptian obelisk still bears the wounds of World War I.

This London marker celebrates the spot where the world-famous English band was founded.

Putting the "mod" in "modular" since 2000.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

An architectural oddity hides in plain sight on this iconic London bridge.

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

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

The signs of a long buried road can still be found hidden beneath a London sewer grate.

A student driver's nightmare.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

A domino effect created with Britain’s iconic telephone boxes.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.