Costa Marques is a municipality located in the Brazilian state of

Rondônia Rondônia () is one of the 26 states of Brazil, located in the northern subdivision of the country (central-western part). To the west is a short border with the state of Acre, to the north is the state of Amazonas, in the east is Mato Grosso, ...

. Its population was 18,798 (2020) and its area is 4,987 km². The city is located in the Guaporé River's right bank and the main attraction is ''

Forte Príncipe da Beira Forte Principe da Beira (Portuguese for "Prince of Beira Fortress") is a fortification on the lower part of the Guaporé River close to its confluence with the Mamoré River in the Brazilian state of Rondônia. The fort was built from 1776 to 17 ...

'' (named after the Prince of Beira), which was built in 1786 by the Portuguese Kingdom to protect that region from the Spanish Crown. The municipality contains 91% of the

Serra dos Reis State Park The Serra dos Reis State Park ( pt, Parque Estadual Serra dos Reis) is a state park in the state of Rondônia, Brazil. Location The Serra dos Reis State Park is divided between the municipalities of Costa Marques (91.17%) and São Francisco do ...

. It contains 14% of the

Serra dos Reis A State Park The Serra dos Reis A State Park ( pt, Parque Estadual Serra dos Reis A) is a state park in the state of Rondônia, Brazil. Location The Serra dos Reis A State Park is divided between the municipalities of Costa Marques (14.17%) and São Franci ...

, created in 1996. It also contains 52.5% of the

Rio Cautário State Extractive Reserve The Rio Cautário State Extractive Reserve ( pt, Reserva Extrativista Estadual Rio Cautário) is an extractive reserve in the state of Rondônia, Brazil. Location The Rio Cautário State Extractive Reserve is divided between the municipalities of ...

, created in 1995.

References

Municipalities in Rondônia {{Rondônia-geo-stub