Fully loaded, Tunisian-style sandwiches are on the menu at this unassuming hole-in-the-wall.

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Eighty million natural history specimens call this gargantuan museum home.

An incarceration museum on the spot of possibly the oldest prison in England.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

Hear the quietest sound from across the dome.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

The celebrated eyesore created by starry-eyed sweethearts.

The oldest stone house in Paris was built by its most famous alchemist.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

The video game-themed street art first popped up in the French city.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Paris' linguistic guide to the international language of, yes, love.

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.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

Where condemned pirates met their grisly end at the gallows on the River Thames.

Final resting place of one of the classic authors of horror literature.

This museum houses an imposing skeleton army comprised of creatures great and small.

The medieval woodcut-style artwork chronicles life in medieval London.

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