Project Blinkenlights began in 2001 as a creative endeavor by the Chaos Computer Club to mark its anniversary. The project uses building facades as giant pixelated screens, creating interactive light displays visible from a distance. The initial installation took place at Berlin's Haus des Lehrers, featuring an 18 by 8 pixel monochrome display. Subsequent projects expanded the concept, including the 2002 Arcade installation at Paris's Bibliothèque nationale de France, which showcased the world's largest computer game display with 26 by 20 pixels and eight shades of grey. In 2008, Toronto City Hall hosted the Stereoscope project, combining two towers into a single 96 by 32 pixel matrix with 16 greyscale levels. More recently, since 2023, the Polychrome project introduced color to the Blinkenlights installations, extending the concept from Camp to the Nation of Gondwana. The project website features galleries of original animations, tools to convert personal videos into compatible formats, and a press archive documenting over twenty years of coverage. Project Blinkenlights illustrates how urban architecture can be repurposed for artistic and interactive digital displays, merging technology and public space.