from Archivio storico Città di Torino
The first project is entrusted to the architects Cardona, Bonsignore, Lorenzo Lombardi, Michelotti and Brunati. At the same time Gaetano Lombardi proposes a similar project, but which foresees a more limited expansion, however none of the projects, developed linearly to Pertnichamp's ideas, satisfied the sovereign, that June 14, 1817 suspended the works.