Circus Aedificare is a construction machine that pours a free and unorganized matter around it. The ritual spilling of matter accumulates to the point of constituting an enclosure around it, made of a pure and anarchic accumulation. This absence of constructive economy has for counterpart to obtain an architecture which is exchanged with the field of Painting or Sculpture. In the idea of synthesis of arts, this building succeeded to move the painting dripping method in the field of Architecture. By withdrawing from construction knowledge, it is the density of the material itself that gives shape to the building and its natural distribution.