Petrópolis (Portuguese pronunciation: [ˌpeˈtɾɔpuʎiʃ]), also known as The Imperial City of Brazil, is a municipality in the state of Rio de Janeiro, at a distance of 68 km from the state capital.Nestled among the forested hills of the Serra dos Órgãos, in the valley of the Quitandinha and Piabanha rivers, Petrópolis is a popular winter holiday spot.