Profit-based businesses today use bright billboards as a method of catching customers' attention while public actors often install floodlighting to highlight buildings. This report focuses on whether it is possible to combine the two methods to create a richly informative façade lighting, a light that displays a clear message and at the same time is beautiful and helps to create a landmark in the city. To create this, the light needs to be shaped or have a movement, since light itself can never be a carrier of information. The study investigates what level of abstraction a façade lighting can have for the crucial information to still reach the viewer. In this survey four different activities were portrayed. Each of the activities was interpreted into lighting compositions with three levels of abstraction per activity. The observers were then shown these compositions displayed on a façade and had to decipher what they perceived as the function of the building. The singularity of man is evident in the interpretation of the different light compositions, a wide spread in the experience and interpretations of the lighting applications were found in the all of the designs. Even though the light was perceived in the same way - the interpretation of activities was unique for each individual. The lighting on the façade is only one parameter to relate to, the building and its surroundings create a context that together form the perception of the activity. The lighting must be planned on the basis of what is in its vicinity, a solution that works on a solitary building will not work on a building in the middle of a big city. Should the lighting be used as advertising, it must be simple and quick to interpret - thus low to medium level of abstraction. A very abstract lighting becomes an added value, something which strengthens the building and provides a more lasting impression but the information rarely reaches the viewer.