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

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

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Catacombs turned marketplace.

A hands-off space for graffiti artists to hone and display their skills.

A student driver's nightmare.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Banksy gives themself artistic license with this piece of London street art.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A kaleidoscopic warehouse-maze of handmade neon signs.

The Brutalist building harbors an unusual inverted dome that swoops down over its central sacred room.

A small collection of magic tricks and memorabilia is now an apartment-sized museum.

This record shop and unofficial black metal museum is an ode to Oslo's heaviest musical export.

Oslo's historic toboggan run has been letting thrill seekers slide from train stop to train stop for over a century.

Thousands of miniature bronze sculptures have taken over this city square creating a unique art installation.

This floating sculpture of ice is a poignant reminder of nature's power.

Would you like a sleeper hold with that?

This magical space partly designed by Antoni Gaudi is one of the best examples of romantic gardening in the Mediterranean.

"Purveyors of traditional sweets and vintage treats."

An abandoned tank sits in an empty London lot as a symbolic middle finger to local city planners.

A much-loved local landmark pays tribute to the shipbuilding past of this area.

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

One of the world’s leading and most extensive archives on the Holocaust, the Nazi era, and genocide, this collection includes published and unpublished works, press cuttings, photographs, and eyewitness testimony.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.