Caxias do Sul is a city in Rio Grande do Sul, Southern Brazil, situated in the state's mountainous Serra Gaúcha region. Coordinates: 29°10′0″ S, 51°11′0″ W. It was established by Italian immigrants on June 20, 1890. Today it is the second largest city in the state of Rio Grande do Sul. The demonym of the citizens of Caxias do Sul is Caxiense.