The Mood Wall, installed in an Amsterdam underpass, is 24 meters long and has 2,500 LEDs.
The Moodwall is located in a pedestrian tunnel and interacts with people passing by, improving the atmosphere in the tunnel and making people feel happier and safer. The interactive urban wallpaper is made from 2500 LEDs behind a ribbed semi-transparent wall. The curves in the wall make it less vulnerable to graffiti and improve visibility.
Designed by Jasper Klinkhamer of Studio Klink, Matthias Oostrik and Remco Wilcke of Cube, it's the pilot project for a 70-meter long version. [Dezeen]