Around the 1800s in Architecture, but also in every branch of knowledge, there is a feeling of chang and a renewal of all the obsolete traditional values. Moreover with the architect Gropius that create the revolutionary school of Bauhaus and furthermore with the first moderns that spread a sense of creating something new, starting from zero. As a matter of fact, Boullè as Ledoux; worked in years where people as Voltaire, Diderot, Montesquie and Newton represent a revolution around 1780-1800 and it is around this period that Boullè project take place. From his work it is easy to recognize the characters of the Enlightment as a new sense of conscience and a revolution that will take the human as a epicentre of everything. Many are the monuments, houses, cemeteries with a sphere-shaped around those years. Boullè, living in a rationalist period use this figure to symbolize perfection and everything relates to the divine. The circle as a drawing has been used often in Rome, on the Campidoglio’s pavement or Sant peter’s entrance and for churches as S. Stefano Rotondo. During centuries the circle has been used since Stonehenge but also in Sarmizegethusa or in Chaco canyon. As Buckminster Fuller, creator of the geodesic dome motto was: “More than less”.[1]
These three projects have been joined together because of the their main similarity: the sphere.
All of those structures are constructed around this geometrical figure and even if Boullè’s