Licht an! Für Deinen Traum! was an interactive Fassade Projektion on the Minster of Constance. The aim of this project was to bring together dreams from people all over the world. People could send and share their dreams live via Facebook, Smartphone-Apps or a “Dream-Station” in front of the minster of constance. We received over 500 dreams and wishes from people from more than 20 different countries. All dreams were saved in a database. To control the projection I developed a program in “vvvv” that collects the dreams from a database, visualises them and sends them to the beamer. We also developed and implemented a Facebook-App campaign and a mobile App for iOS and Android.