Room to think
To create the light spot phenomena you need something similar to tree trunks that the light filters through. Therefore, there are a lot of pillars in the building. The pattern of the pillars is dense so that when you stand in the middle of the building, you don’t see the end of the pillar forest. This is a way of creating a feeling of interiority in the building. In the same way you don’t see the center of the building, or the light from it, when you are by the entrance of the building, but only when you have taken a few steps in. Then you can begin to follow the light like I did in the forest.