Porto Velho

Porto Velho (, Old Port) is the capital of the Brazilian state of Rondônia, in the upper Amazon River basin. The population is 548,952 people (as of the IBGE 2021 estimation). Located on the border of Rondônia and the state of Amazonas, the town is an important trading center for cassiterite, the mining of which represents the most important economic activity in the region, as well as a transportation and communication center. It is on the eastern shore of the Madeira River, one of the main tributaries of the Amazon River. It is also Rondônia's largest city, and the largest state capital of Brazil by area. The municipality occupies most of the border between Amazonas and Rondônia, and is both the westernmost and northernmost city in the state. History Officially founded on October 2, 1914, Porto Velho was founded by pioneers around 1907, during the construction of the Madeira-Mamoré railroad. After the railroad was completed, the local population was about one thousand inhabitants; its buildings were chiefly the railway's installations and the wooden houses of the Caribbean (mainly Barbadian) workers - hence the name of the town's largest district by then, "Bajan Hill" or "Barbados Town", nowadays called the "Alto do Bode".