A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

In this century-old literary safehouse, print is alive and well.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Deep into the lower floors of Pike Place, find a date with fowl fate.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

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

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

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

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

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

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

In 1943 the British military took control of this village, telling residents they had to leave temporarily. The villagers were never allowed to return.

A surprisingly approachable statue of the man who dominated King Henry VIII's government.

You won't find these curiously named passageways anywhere else in England.

It's believed emperor Hadrian himself funded this once architectural wonder.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

Statue commemorating the use of ether in anesthesia.