Monumental staircase

1720-1721. Designed by Giovanni Antonio Sevalle, the staircase of the building has four straight ramps; the middle of pillars is formed by eight square pillars in Gassino stone, the great pavilion vault is dated 1721. The stucco that decorate the staircase are made from Lugano Charles Pope, who has worked with Filippo Juvarra in the yard of Superga.