Giovanni Antinori (January 28, 1734 – June 24, 1792) was an Italian neoclassical architect. Employed by the papacy, he oversaw the re-erecting of three of Rome's obelisks - the Quirinale (between the Horse Tamers), the Sallustian (outside Trinità dei Monti) and the Montecitorio. Life He studied mathematics in his birth town, Camerino, under his father Girolamo, a well-known and expert surveyor. He left Camerino for Rome to continue his mathematical studies (and started his architectural studies) at the "Sapienza" and at the Accademia di San Luca, participating in the 1754 Concorso Clementino in "classe II di Architettura". He was instructed in architecture by Marquis Gerolamo Theodoli, designer of the teatro Argentina. In 1755 Antinori went to Lisbon where he worked as architect in the Casa dos Bicos attending the reconstruction works after the earthquake of 1755, He also worked to the plans of a new palazzo reale of Campolide for Joseph I, but a short time later was imprisoned either due to envious accusations by his rivals or due to a conspiracy in which he had got involved. With the help of the Portuguese woman Josefa Luisa Lopez de Cunha, he escaped and fled to Italy, where he married her. Returning to Rome and from there to Camerino, he built the splendid arcade and Hall of Mirrors in the castle-villa of Marquis Alessandro Bandini (Lanciano di Castelraimondo). From 1772 to 1778 he reconstructed and enlarged the interior of the church of the Monte Oliveto Maggiore abbey not far from Siena, creating grandiose Baroque shapes which anticipated the neoclassical forms to come. He worked for the Doria-Pamphilj family in Rome, collaborating with Francesco Nicoletti, their court architect, and replacing him from 1776 onwards. He built them the structures sustaining temporary wooden hall in the courtyard of their palazzo in Via del Corso in 1769 in occasion of the visit of emperor Joseph II of Austria. He also worked on designing the new waterfalls in the gardens of the Villa Doria Pamphili which were subsequently amended by architect Francesco Bettini, and worked at their other properties on the outskirts of Rome, designing alongside his brothers Luigi, Tommaso and Vincenzo and nephew Girolamo. From 1778-83 he constructed a casale within their castello at Piombinara, not far from Colleferro. On the accession of Pope Pius VI, Antinori was put in charge of an important excavation in the church of San Rocco, near the Mausoleum