A Swiss artist, Felice Varini has recently been brought to my attention. I had seen his pieces in photograph form in the past and had never been given his name. After looking through his website, which happens to be in french, and finding some great video showing dynamics of the project, I thought I should share it with you all here.
Take a look at this photo of a whole neighborhood he did here:
The video showing just how these work, seen by pedestrians and only clearly visible as a perfect whole from a single perspective.