Petrópolis is a neighbourhood in the city of Porto Alegre, the state capital of Rio Grande do Sul, in Brazil. It was created by Law 2022 from December 7, 1959.
In the 1920s, Petrópolis was occupied by chácaras (little properties), where theirs owners would cultivate orange trees. Its development took place around a road called Caminho do Meio, which conected Porto Alegre to Viamão and Gravataí municipalities, now known as Protásio Alves Avenue.
The land relief of Petrópolis is quite varied, and its verdant hills atracted middle class people, which promoted its settlement. In 1937, the population increased as a result of the creation of Petrópolis tram car line.
The origin of the neighbourhood name is uncertain. It is said to be a tribute to the municipality of Petrópolis, in Rio de Janeiro state, and that this was an idea from the german immigrants living in the area since the early 20th century.[1]