Sweden's "good old days" painstakingly re-created in a model village.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

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

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

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

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

A historic arboretum and non-conformist, non-denominational park cemetery.

This secluded walkway overlooks a magnificently wild London green space.

The largest of London's subterranean rivers and once a mad, bad center of London life.

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

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Remnants of a Victorian garden feature sitting in public woodland.

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

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

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

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

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