rio das ostrashas 14 beautiful beaches with 28 miles of coastline, alongside preserved islands, lagoons, mangrove areas with native species of fauna and flora and parque dos pássaros, the largest bird sanctuary in south america.

moreover, the região dos lagos is home to the state park of costa do sol, which was created in 2011 to protect the region's biodiversity and to provide a public space for leisure and ecotourism.

the municipality of araruama is home to the preserved sandbank massambaba, which is known to contain the world's most exotic orchids.