Watch Online Free HD Solarmovies. Curitiba, the capital of the state of Paraná and metropolis of south-eastern Brazil, is considered to be an outstanding example of sustainable urban planning and living. In order to overcome its huge urban problems, the city planners of Curitiba have, for the past 40 years, come up with creative, cost-efficient and sustainable solutions. These solutions have bestowed a very high quality of life for its citizens.