- The region of Lazio has a population of 5.7 million people and borders 6 other Italian regions. - The patron saints of Lazio are St. Peter and St. Paul, both important figures in the early Christian church. - Some famous attractions in Lazio include the Vatican, the Coliseum in Rome, and the Trevi Fountain. Famous cities in the region include Rome, Sperlonga, and Viterbo.