This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

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

Hackney's newest private museum and natural curiosity shop.

A boutique perfumery fashioned to look like a Victorian-era shop.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

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

The curios of pharmacist and collector Henry Wellcome.

A student driver's nightmare.

A tongue-in-cheek arcade where the games are based on everyday life.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

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

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

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

This museum is rotten with a century of wax medical deformities.

An amazing collection of wax anatomical models and terratological models.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

An Aztec snake god has taken the material form of an apartment complex.

A 16th-century horror show built in a lovely Italian garden.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

This semi-secret storybook hedge maze is also the oldest garden in the city.