The project ‘StadtFinden Moderne’ allows you to visit the Hansaviertel, an area in Berlin built for the Unterbau' exhibition in 1957, by means of PDA guides. Connecting to the Points of Interest defined via GPS, the digital guides will take you through the 50 year old, modernist architecture exhibition with which West Berlin tried to define itself as a visionary place at that time. Each Point of Interest contains information about the real environment, like comments or interpretations.