Domenico Fontana
Its construction dates back to the period of Spanish Viceroyalty of Enrique de Guzman, Count of Olivares. It was built by Giovanni Domenico D'Auria using a design by the Swiss architect Domenico Fontana (born: 1543, Melide, Switzerland), between 1600 and 1601. Also involved in its completion were the sculptor-architects Michelangelo Naccherino, Pietro Bernini, and Cosimo Fanzago.