This research investigates events as an elementary tool to change the physicality of the environment, the perception of the environment and the behaviour of users within an environment. The main research question being, How can an event influence architecture? To find out what an event is, the literature study will focus on the writing of Bernard Tschumi Herman Hertzberger and J. J. Gibson, both in a different way involved in the philosophy of the event. Subsequently we will take a closer look at the documenta, the quinquennial contemporary art exhibition in Kassel, a provincial city in the middle of Germany. The meaning of an event is investigated by looking at several noteworthy events that happened during documentas throughout the years....