Donato Bramante
The solution is a gigantic inflation of some conventions of terraced garden stairs. The first such divided and symmetrical stairs were devised for the Belvedere Courtyard in the 1600s by Donato Bramante, while shaped and angled steps were introduced by Michelangelo in the vestibule to the Laurentian Library. The Bourbon fleur-de-lys and Innocent XIII's eagle and crown are carefully balanced in the sculptural details.