The Academy can also boast modern members, including sculptors Ernesto Biondi and Piccirilli Brothers.
Official honours were lavished on him from as early as 1725, when he was made a Knight of the Golden Spur; in February 1727, he was elected an accademico di merito of the Accademia di San Luca.
He gained many prestigious appointments in the 1930s, including a professorship at the Academy of Fine Arts of Naples, the Mussolini prize for arts (1936), and was nominated member of the Accademia dei Virtuosi al Pantheon, and to the Accademia di San Luca in Rome.
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At the age of 15 years, he traveled to Rome to work under Cesare Mariani, director of the Accademia di San Luca, then moved to Naples where he worked in the studio of Domenico Morelli.
He contributed illustrated architectural perspectives to Ferrari's Hesperides (1646) and became principe of the Accademia di San Luca (1656–57).
Carmassi is recipient of the Heinrich Tessenow gold medal awarded by the Heinrich-Tessenow-Gesellschaft e.V. (Alfred Toepfer Stiftung F.V.S.); he was appointed as a member of the class of Architecture in the Accademia delle Arti del Disegno of Florence and of the Accademia Nazionale di San Luca.
Returning to Rome, Michetti was inducted into the Accademia di San Luca in 1725 and appointed architect of the Apostolic Chamber and of the Theatine Order.
In 1818–27 he went to Italy, and continued his art studies at the Accademia di San Luca in Rome under Andrea Pozzi and privately with Vincenzo Camuccini and Bertel Thorvaldsen; as well as at the Academy of Vienna since 1822 under Antonio Canova.