The spaces between them are filled with what was termed pierrotage, a mixture of rubblestone and clay. Each of the walls slopes slightly inward as it rises, and is braced by diagonal timbers. The roof trusses are of walnut and oak, and give the roof a bell-cast appearance.
The gaps between these structures are filled with a mixture of rubblestone and clay, referred to as pierrotage. As the walls rise, they gently slope inward, stabilized by diagonal timbers. The roof trusses, crafted from walnut and oak, add to the roof's curved silhouette.