A new book called Imagine Architecture: Artistic Visions of the Urban Realm is a collection of buildings that were never built. They exist in art, literature, or in our imaginations. This one is from a series called Interacciones.

Artist and photographer Victor Enrich's retouched photo montages imagine some of the most improbable buildings in the book.

His work is inspired by the puzzle-like qualities of cities, which he says are "a complex system of nodes that involve and connect

everybody’s blurry dreams, exacerbate passions, fearful nightmares, or even tedious social life.”

The Flying and Floating series by Thomas Overweg features slivers of scenes taken from computer combat games. These are from Mafia 2.

The floating windows and fire escapes that lead to nowhere are one way that Overweg emphasizes the limitations of videogame architecture. Games tend to reproduce “what we already know," he says.

These floating, magpie-like houses by artist Laurent Chehere don't look like it, but they were all photographed in Paris.

Chehere composes each one by editing together different elements that create a story based on what he can find out about the history of the building.

Artist Larissa Fassler combines traditional architectural methods like blueprints and maps with actual human interactions that she observes on the street.

This series is based off a Berlin neighborhood and is a collapsed visual narrative of advertisements, Google searches, and graffiti that sprung up over time.

These black and white photo engravings belong in the book's last chapter, "The Ruin," because as imagined here, they're abandoned homes of the future that have been claimed by the environment.

In Interacciones, Dionisio González created a series of surreal buildings that have melded with nature.

The buildings in the Climbing in Love series are often based on real buildings, but have flourished details, like cement windows.

In each seemingly deserted scene, the artist Giordano Poloni paints in a tiny romantic human interaction.

Unité built the world's largest replica of Le Corbusier's Unité d'Habitation housing block in Marseille out of foam, Bristol board, and Wite-Out. By creating such an exact replica, the unit is meant to express how impossible it is to stay original in modern architecture.

Artist Matthew Cusick's collages of imagined highways are scrapped together from old road maps and atlases.