This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A bronze bust commemorates the heroism of the secret agents who led covert operations against the Nazis.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

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

A tiny replica of the iconic London landmark hides on the side of the steel structure.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

This coffee shop lies hidden beneath a historic church.

There's an exclusive Beefeaters pub hidden in the Tower of London.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

17th century palace once a meeting place for politicians.

A Swiss magician's vault of oddities.