Giacomo Barozzi da Vignola was a theoretical and practical architect of the Transition Period between the Renaissance and Baroque styles. He was the pupil and successor of Michelangelo. His two books, "Regole delle cinque ordini d'architettura" (1563) and the posthumous "Due regole della prospettiva pratica", had great influence for centuries.
Farnese castle, Viterbo
Gesu Jesuit Church, Rome
St. Peter's, two subordinate domes according to Michelangelo's plans
Villa Giulio for Pope Julius II
Church of the Angels at Assisi
Church of Sant' Andrea