This screen comes from the people at Innovation Lab, who have embedded optical fibers that work like pixels into concrete. The optical fibers can be lit to create monochromatic images. Even more amazing, the optical fibers work with natural light as well as artificial light, making it effectively transparent. This technology has many applications for architecture and urban planning. I'm particularly interested in it's application in transportation infrastructure, such as subway stations, highways, and sidewalks.

Via we-make-money-not-art.