On the top of hill covered with grass, five white sofas are floating in the air. Viewers find them from under the hill and walk up. Each sofas have ladder or stairs to reach to the seat. And viewers can sit down on the sofas and realize beautiful landscape and sky in front of them. This is the sofa to sit into the sky. More here

Quadratura uses video projection on architecture to extend the main axis of the room and expand the limits of physical space. The project is based on a technique used in the baroque. More info here.

Animalia looks at how we may begin to genetically alter the design of corals seeded in areas where tsunames might hit. More info here

Inspired by the Weather Modification Office in China, Caelum creates a hypothetical sandbox testing facility in Mali, where a completely artificial climate with complex wind manipulation, sunlight control, rain seeding, and weather-based biodiversity experimentation is set up. More info here

Time Tilings is about time, space and perception. Pablo Valbuena explores the overlap of the physical and the virtual, the generation of mental spaces by the observer, the dissolution of the boundaries between real and perceived, the links between space and time and the use of light as prime matter. More info here

JR has created the world’s largest participatory art project. When the artist first started the project, it was considered illegal public art, but as the Paris City Hall covered its building with his photos, it became “official”. The public is not only the audience but also the subject of the piece.

More here.

Sabina Lang and Daniel Baumann’s collective “L/B” is focused on architectural interventions that reconsider notions of perspective, function, and beauty.  “Beautiful Steps #2” is a part of their “Beautiful Steps” series in which they build staircases in non-traditional locations.  In this example, they have created a quasi-functional staircase on a skyscraper, utilizing the forced perspective of the building’s architecture to enhance their own work.

More here.

Felice Varini is a Paris-based artist who uses architectural space, in all its forms, as his canvas.  The possibility of multiple vantage points in a single space is an influential factor in his work.  In “Cercle et suite d’eclats,” Varini painted perfect circles on over 70 houses in Vercorin, Switzerland that can only be viewed as complete circles from one vantage point.

More here.