Genzano di Roma is a town and comune in the Metropolitan City of Rome, in the Lazio region of central Italy.

According to one version, the hill overlooking the Lake of Nemi on which the city is situated was once devoted to the goddess Cynthia, whose cult was associated to that of Diana Nemorensis.

For others the presence on the hills, at that time of the "tribus or gens Cynthia" originators and custodians of the cult of courage, in "Castrum Gentianum" from them the derivation of the name Genzano.

In the 19th and early 20th century it was seat of numerous peasant revolts; during World War II it suffered heavy damage under Allied bombings, which destroyed 90 percent of its buildings.

A whole street (Via Italo Belardi) is covered with allegorical carpets of flowers and a masked parade walk on these, with medieval and traditional clothes realized by the town's women.