 The pillars stand out with a diameter of 1.55 meters and a height of 14.10 meters.Reasons for the hall, located in all the doors and the lateral panels, are the Boticcino marble squares sculpted by Angelo Zanelli.On both sides of the end of the staircase are two bronze sculptural groups with granite pedestal by the Italian Angelo Zanelli, one male, and the other female, have a height of 6.70 meters and represent the first progress of human activity and the second the tutelary virtue of the people.