Lecture by Dirk E. Hebel on November 18, 2013 in the seminar ‘Information Architecture of Cities’ at the chair of Prof. Dr. Gerhard Schmitt, ETH Zurich. The elective course ‘Information Architecture of Cities’ opens a holistic view on existing and new cities. The goal is to better understand the city by going beyond the physical appearance and by focusing on different representations, properties and impact factors of the urban system.