He was asked by the consuls of the Guild of Wool to complete an unfinished project begun 40 years earlier by Agostino di Duccio: a colossal statue portraying David as a symbol of Florentine freedom, to be placed in the Piazza della Signoria, in front of the Palazzo Vecchio.

His projects in Rome included: the church and piazza at Santa Maria della Pace ; the Via del Corso, Piazza Colonna and associated buildings ; reworking of the Porta del Popolo, the Piazza del Popolo and Santa Maria del Popolo ; Piazza San Pietro, the Scala Regia and interior embellishments in the Vatican Palace and St Peters ; Sant ' Andrea al Quirinale ; part of the Palazzo del Quirinale ; the obelisk and elephant in Piazza della Minerva.

View of Palazzo della Pilotta in the Piazza della Pace.

Artistic and architectural commissions included the family palace in Rome, the Palazzo Barberini, the college of the Propaganda Fide, the Fontana del Tritone in Piazza Barberini, the cathedra in St Peters and other prominent structures in the city.

It was established by Pope Paul VI on 15 July 1971 and is based in the Palazzo San Callisto, in Piazza San Callisto, Rome.

< center > The opposite side of Piazza del Duomo, with late-Art Deco Palazzo dell ' Arengario .</ center >

In the Middle Ages, the Torre delle Milizie and the convent of St. Peter and Domenic were built, and above Constantine's building was erected the Palazzo Rospigliosi ; the two famous colossal marble statues of the " Horse Tamers ", generally identified as the Dioscuri with horses, which now are in the Piazza Quirinale, were originally in this Palazzo.

* In the Piazza dei Signori is the beautiful loggia called the Gran Guardia, ( 1493 – 1526 ), and close by is the Palazzo del Capitaniato, the residence of the Venetian governors, with its great door, the work of Giovanni Maria Falconetto, the Veronese architect-sculptor who introduced Renaissance architecture to Padua and who completed the door in 1532.

* The Palazzo Comunale ( begun 1460 ), Palazzo del Podestà ( 1264 ) and Palazzo della Prefettura ( rebuilt 1771 ) on the central square Piazza del Plebiscito.

* Palazzo Porto in Piazza Castello ( unfinished );

Piazza del Campidoglio, on the top of Capitoline Hill, with the façade of Palazzo Senatorio.

The Pope provided them with a papal guard of troops, gave them the Palazzo Muti in the Piazza dei Santi Apostoli in Rome to live in, plus a country villa at Albano.

The large Piazza del Duomo is lined with attractive original buildings as the Palazzo del Comune and the Palazzo del Podestà: it is the setting ( in July ) of the Giostra dell ' Orso (" Bear Joust "), when the best horsemen of the districts of the town tilt with lances at a target held up by a dummy shaped like a bear.

In June – August 1425 he was in Siena, where he painted a Madonna with Child, now lost, for the Palazzo dei Notai on Piazza del Campo.

The new building was inaugurated in 1584, in what became known as the Piazza Collegio Romano, across from the Palazzo Doria Pamphilj.

A huge statue of Brunelleschi now sits outside the Palazzo dei Canonici in the Piazza del Duomo, looking thoughtfully up towards his greatest achievement, the dome that would forever dominate the panorama of Florence.

The Palazzo della Ragione on the Piazza Vecchia.

The Triton Fountain by Gian Lorenzo Bernini, in Piazza Barberini, Rome

Commissioned by his patron, Pope Urban VIII, the fountain is located in the Piazza Barberini, near the entrance to the Palazzo Barberini ( which now houses the Galleria Nazionale d ' Arte Antica ) that Bernini helped to design and construct for the Barberini, Urban's family.

The setting of the Piazza Barberini has changed significantly since the seventeenth century.

It is located at Via Veneto, close to Piazza Barberini.

The church has seen a surge in tourism thanks to the widespread popularity of author Dan Brown's novel Angels and Demons, which features the building ( but for purposes of his novel, the writer moved its location down to the Piazza Barberini ).

The papal palace, and the adjoining Villa Barberini that was added to the complex by Pius XI have enjoyed extraterritorial rights since the signature of the 1929 treaty with Italy ; the little piazza directly in front was renamed Piazza della Libertà in the first flush of Italian unity after 1870.

* Piazza Barberini

* Piazza Barberini Rome Italy

It was built in the style of an army camp with the main streets, the cardo and the decumanus, intersecting at the present Piazza della Repubblica.

The great Galleria Vittorio Emanuele II, a covered passage that connects Piazza del Duomo, Milan to the square opposite of La Scala opera house, was built by architect Giuseppe Mengoni between 1865 and 1877 to celebrate Vittorio Emanuele II, first king of reunited Italy.

* Historical centre of the town, built in grey granite blocks ( mainly 18th century ); particularly Corso Matteotti, via Roma ( Carrera Longa, Lu Runzatu, Lu Pultali ), Piazza d ' Italia ( Piazza di l ' Ara ), Parco delle Rimembranze, Fonte Nuova ( Funtana Noa ) and Parco di San Lorenzo, via Mannu ( ex via dei Nobili or dei Cavalieri );

Among these houses, Bevacqua remember the Villa Villa and Cumbo, S. Marina, and the ancient church of ' Spadafora, S. Peter. Among the most famous are those of the Fatherland Fallen Milazzo ( located in Piazza Roma and erected in 1924 ), the source of the mythical and ancient Apple ( opposite the Church of the Carmine ), the ' Statue of Liberty, built in honor of Garibaldi, the Statue of Luigi Rizzo, the monument Milazzo Bridge, erected to commemorate the famous battle of 20 July 1860 ; the large floor mosaic depicting the coat of arms, located in the Atrium of the Carmine.

Other attractions include the Norman Arc, that is the remains of the old Norman Castle built in 1073 and demolished in 1880, and a number of churches, including the Royal Saint Nicholas ( San Nicolò Regale ) Church, a rare example of Norman architecture built in 1124, the Seminary, built in 1710, which surrounds the main local piazza, Piazza della Repubblica, and St. Vitus on the Sea ( San Vito a Mare ) Church.

* Piazza Duomo, on the side of the Cathedral, with frescoed Renaissance buildings and the Late Baroque Fountain of Neptune ( Fontana di Nettuno ) built in 1767-1768.

Facing the Piazza Grande ( a UNESCO World Heritage Site ), the Town Hall of Modena was put together in the 17th-18th centuries from several pre-existing edifices built from 1046 as municipal offices.

Old buildings were torn down that looked like an obstacle, it was modified the old Market Square in Piazza Trento e Trieste in front of which was built the new City Hall, designed by architect Brusconi.

Towards the end of the 16th century, the municipal square ( now Piazza Cavour ), which had been closed off on a site where the Poletti Theatre was subsequently built, was redesigned.

Vigevano's main attraction is one of the finest piazzas in Italy, the Piazza Ducale, an elongated rectangle that is almost in the ideal proportions 1: 3 advocated by the architectural theorist Antonio Filarete, which is also said to have been laid out by Bramante, and was certainly built for Ludovico il Moro, starting in 1492-93 and completed in record time, unusual for early Renaissance town planning.

Piazza Ducale was actually planned to form a noble forecourt to his castle, unified by the arcades that completely surround the square, an amenity of the new North Italian towns built in the 13th century.

In 1718 Sir James took a large house on Covent Garden Piazza, and in 1725 he built Thornhill House in the south of Stalbridge, near Sturminster Newton, Dorset.

In the principal square ( Piazza della Libertà ) stands the town hall ( Loggia del Lionello ) built in 1448 – 1457 in the Venetian-Gothic style opposite a clock tower ( Torre dell ’ Orologio ) resembling that of the Piazza San Marco at Venice.

The palace, located on the Via del Quirinale and facing onto the Piazza del Quirinale, was built in 1583 by Pope Gregory XIII as a papal summer residence.

* Piazza della Loggia, a noteworthy example of Renaissance piazza, with the eponymous loggia ( the current Town Hall ) built in 1492 by the architect Filippino de ' Grassi.

In the Piazza di Spagna at the base is the Early Baroque fountain called Fontana della Barcaccia (" Fountain of the Old Boat "), built in 1627-29 and often credited to Pietro Bernini, father of a more famous son, Gian Lorenzo Bernini, who is recently said to have collaborated on the decoration.

The Caldoras built new city walls still seen today: Torre Bassano in Piazza Rossetti, Torre Diomede in Vico Storto del Passero, Torre Diamante in Piazza Verdi and Porta Catena, with Castello Caldoresco as its primary defensive outpost.

* The church of San Sebastiano was built around the 16th century as a tribute to San Sebastian by the people for deliverance from the plague and is located in Piazza Garibaldi, right in front of the Cathedral.