 In 1873 it was decided that the name of the town should be changed to Genzano di Roma to avoid confusion within the postal service as there are two towns in Italy called 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.In June, a folkloristic and religious exhibition, the ""Infiorata"" is held.