Petrópolis (Things to do - Places to Visit) - PETRÓPOLIS Top Tourist Placesbr Municipality in Brazilbr Petrópolis is a Brazilian city north of Rio de Janeiro. Bordering the Serra dos Órgãos National Park, with its forested peaks and waterfalls, it’s known as a mountain retreat for Rio residents. br br In the center, the Imperial Museum displays period furnishings in the former palace of 19th-century emperor Dom Pedro II. Nearby, the huge São Pedro de Alcântara Cathedral houses the mausoleum of the emperor and his wife.