Iesi is an important industrial and cultural center in the province of Ancona in the Italian region Marche, located on the left Bank of the river Esino 17 km from the Adriatic coast. Jesi was one of the main towns in Umbria, when in the 4th century BC on the territory of tribes invaded the Gallic senones, and turned it into a bulwark against the tribes Piceno. In 283, the year BC the Gallic senones, were expelled by the Romans, and iesi in 247th BC became a Roman colony.

After the fall of the Western Roman Empire iesi repeatedly raided and looted first by the Goths and then the Lombards. With the end of the Gothic war, Italy became part of the Byzantine Empire, and iesi – one of the main centres and the chair of the Bishop. Starting from 1130-the year the town became an independent municipality, gradually began to expand their borders and capture the surrounding area. It was here in 1194, the year he was born the Holy Roman Emperor Frederick II, who conferred iesi subsequently the title of a Royal City. In the 14th-15th centuries, the city passed from hand to hand – ruled the papal governors, of the family of Malatesta, da Montone and Sforza. The last for a while turned iesi in its main stronghold in the Marche. But in 1447, the year the town became part of the Papal dominions, where he remained until the accession of Italy in the 19th century.

Among the main attractions of iesi worth to mention, above all, the Cathedral, built in the 13th to 15th centuries, the Palazzo della Signoria from the 15th century with two rows of balconies, Palazzo Baleani with luxurious gilded mouldings and monastery of San Floriano 18th century. Preserved defensive city walls of the 14th century, built on the site of Roman fortifications and partially reconstructed in the 15th century. From religious buildings stand out Gothic Church of San Marco, built in the 13th century, the Church of Santa Maria delle Grazie Church with a bell tower from the 17th century and the Romanesque Church of San nicolò with its Gothic portal. Also noteworthy Palazzo Ricci, the facade of which is made under the influence of the famous Palazzo dei Diamanti in Ferrara, the building of the Pergolesi theatre of the late 18th-century Palazzo Pianetti is one of the most outstanding examples of Italian Rococo art. The wide facade of the latter with a hundred Windows, and the patio is divided Italian garden. In the Palazzo Pianetti today houses the municipal art gallery with a series of works by the Venetian painter Lorenzo Lotto.