This home on a quiet suburban street is completely covered with vibrant mosaics.

This hidden green space is the city's second largest conservatory.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Collection dedicated to brands, packaging and advertising.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

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

A kaleidoscopic warehouse-maze of handmade neon signs.

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

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.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This Parisian café sticks almost exclusively to an ethos of reuse.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A haunting collection of the vanished and disappearing natural world.

This massive library holds what was once the largest book collection in the world.

France's most famous cemetery, with some of its most curious tombs.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.