- Breves is a city located in the state of Pará, Brazil. It is the second largest city in the state, with a population of approximately 94,000 people. Breves is situated on an island called Marajó, which is the largest fluvial island in the world. The city is known for its beautiful natural surroundings, including rivers, mangroves, and forests. It is also an important commercial center in the region, with a thriving fishing industry and a busy port. Breves is a popular destination for ecotourism, offering opportunities for hiking, boating, and wildlife spotting.