Another very interesting dynamic visualization, this time about the change in religious landscape of Vienna. The research project WIREL created these dynamic visualisations in order to explore the role of religions in shaping the social and demographic structure of the population of Vienna. The city of Vienna had a large Catholic majority until the 1970s. Secularisation and a strong influx of international migrants diversified the religious landscape since then. Fertility and marriage behaviour are other major forces shaping the religious composition of Vienna.