This shape is just like an egg, and it has no beginning and no end. So you feel the space much bigger than its real size. And you can feel the circulation inside. The circulation of each floor, and the circulation of whole building, diving down from the street to the basement, then climbing up the center spiral to the top, and going down along the outside steps surrounding the building. For this circulation idea, I tried not to touch the ellipse wall with the partition walls, but only with the doors, and the furniture. This building is made by concrete with outside insulation. So inside condition is very easy to control with the storage of heat.