Three kilometres east of Olhão is the beautiful 60-hectare Centro Educação Ambiental de Marim (commonly known as Quinta de Marim). A 3km nature trail takes you through various ecosystems – dunes, saltmarshes, pine woodlands – as well as to a wildlife rescue centre and a historic water mill. The Parque Natural da Ria Formosa headquarters and interpretation centre is also here.
Chameleons are among local species of interest. To get here, take a municipal bus to the campground (200m before the visitor centre).
