The territory of Marino was inhabited by Latin tribes from the 1st millennium BC. The ancient cities of Bovillae, Mugilla and Ferentum were part of the Latin League. Under the Roman Republic it was a summer resort for Roman patricians, who built luxurious villas in the area to escape the heat of Rome. In 846 AD, Bovillae - until then the largest settlement - was destroyed by the Saracens, and the population moved to the more easily defendable area of Ferentum, which was fortified under the new name of Marinum. From 1090 it was a dominium of the Counts of Tusculum, and later a fief of the Frangipane and, beginning in 1266, the Orsini. In 1272, San Bonaventura founded the first confraternity of Italy there. In 1347 it was besieged in vain by Cola di Rienzo. Fifty years later, it was the site of the battle between Alberico da Barbiano and the French troops supporting Antipope Clement VII. In 1419 it was bought by the Colonna, who maintained it until 1914. Marino hosted famous historical figures, from Charles VIII of France to Alfonso II d'Este and many others. Vittoria Colonna was born in Marino in 1492 and lived there for part of her life. In 1571, Marino's people welcomed Marcantonio Colonna, a protagonist of the Battle of Lepanto, with a triumph, remembered yearly by a festival. It became part of Italy in 1870. On 14 March 1880 the railway Rome-Ciampino-Marino was opened for service. On 1 April 1906 an electric tram line replaced the former. In 1954 the electric tram line was replaced by buses. On 2 February 1944, during World War II, Marino was heavily bombed by USAAF B-25 aircraft from the US XII Air Force. In 1974, Ciampino became a separate comune. In the Due Santi district, there is the Roman campus of the University of Dallas, which opened in 1994 and is used by its students for its summer programs.
Main sights
Basilica of San Barnaba. It is in Baroque style, with an imposing façade dating to 1653, and a Latin-cross plan with a nave and two aisles. Among other works of art, it houses the Martyrdom of St. Bartholomew by Guercino and a bust of St. Anthony Abbot by Ercole Ferrata.
Church of the Santissima Trinità. It houses a Mystery of the Holy Trinity, now recognized as from a pupil of Guido Reni.
Santa Maria delle Grazie. It has a single nave with side chapels. It is home to a painting of St. Roch attributed to Domenichino and, in a niche at the high altar, a fresco attributed to Benozzo Gozzoli
Fontana dei Mori, depicting prisoners from the aforementioned Battle of Lepanto.
Mithraeum, with an important fresco portraying the God Mithras slaughtering the bull.
Festivals
Grape Festival : Every 1st Sunday of October. This festival is very famous in the surrounding area because, for about one hour, some of the city's fountains spill wine instead of water, recalling the memory of the old vintage and the historical event of the return to Marino of Marcantonio Colonna with 260 "Marinesi" from the Battle of Lepanto.
Doughnut Festival : Every 2nd Sunday of October. The doughnut made with flour, raisins and must is a typical product, a "marinese" cake, of limited production, only in the time of the grape harvest, a tradition based on a 17th-century recipe.
Sports
was a football club of the city. The club folded in 2013 by selling its sports title and become A.S.D. Monterotondo Calcio. The city has another football club, known as Marino Calcio 1926.
