Techniques - Walk-throughs. As the name implies, a walk-through is basically a walk through a building. The idea is that the briefing team or brief writer tours the existing building together with a group of users to see how it functions and to get a feel for the organization. During the tour, the users are asked to point out which spaces they regard as functioning well and which ones not. They are also asked about which building features they consider important, or unimportant, and how they perceive the quality of specific attributes such as furniture, indoor climate or the layout of a room. For the briefing team, walk-throughs are a productive way of getting to know a lot in a short period of time. Much more than surveys or occupancy studies, walk-throughs provide a very visual, tactile and direct impression of the existing situation. Insights come from a combination of listening and looking. What is the atmosphere in the building? Are spaces crowded or empty, noisy or quiet, messy or organized? And how do users perceive the quality of these spaces? What do they like and dislike? What would they like to have changed, and why? Ideally, several walk-throughs are done, with different types of users. In a school, for example, it will be interesting to do separate walk-throughs with the pupils and the teaching staff, and then look at differences and similarities in their stories and their perception of quality. Usually, the tour and its stopping points will be predefined by the facilitators of the walk-through, but it can also be interesting to ask the building users involved to develop the routing. In any case, there should be a possibility for detours to look at spaces or features that the participants did not think of beforehand (e.g. very practical spaces such as storage spaces, toilets, etc.). After the walk-through, there should be a closing session in which the information collected is discussed and summarized. This session can also be used for an initial discussion about how the observations can be translated into requirements for the new situation. Recommendations-Be aware that the outcomes of a walk-through are very much dependent on the people participating -Prepare the walk-through carefully. Make sure that the routing and stopping points cover all relevant spaces. Prepare a list of discussion topics for each stop.-Start each walk-through with an introduction of the method and an explanation of its purpose.-Consider turning the tour into a photo safari, in which users are asked to make photos as visual documentation of the positive and negative aspects of the building.-Do several tours with different kinds of users to get a more comprehensive understanding of the building and its users.