 According to the development plan drafted by engineer Edmondo Sanjust di Teulada in 1909, only detached houses and cottages with vast gardens were intended to rise up in the future urbanization, but in 1922 a specific regulation defined apartment houses without garden as the building archetype for the borough.During the Fascist regime, Parioli was the residence of many high-ranking party and state functionaries.Urbanization was completed in the 1950s, and today, Parioli is known as Rome's most elegant residential area.