In the region of Olhão, nature reveals stunning images, contrasting harmoniously the interior of the fields and mountains with the extensive line of a seeded coastline of islands and islets.
The Ria Formosa is a protected area included in the PNRF, considered the most important wetland in the country, either by its size or by its structural complexity, fauna and flora included, with special emphasis on the avifauna, it's integrated in the Natura 2000 network. All the area classified as a Natural Park, 3770 ha are included in the municipality of Olhão, giving to the coastaline situated between the urban centers of Olhão and Fuseta, an important interest and a scenic value. The landscape of PNRF it´s characterized by three major structural units: the lagoon area, the beach / dune systems and the continental line.
The Olhão municipality has four beaches classified as bathing areas: Armona-Mar, Armona-Ria, Fuseta-Mar and Fuseta-Ria.
In the sub-region of Barrocal (Lower Algarve), the Olhão municipality has several points of interest, namely in Moncarapacho area, from where stands out the Cerro da Cabeça. This Cerro, with 249 meters is the most eastern highest point of Serra de Monte Figo. It's a site with an important scientific and landscape value, which is integrated in the Natura 2000 and in the Corine-Biotypes project, with an area of 574 ha. It is considered by geologists a natural monument because of the value of its karst formations. Its surface, occupied by the largest Lapiás in the south of the country, and its caves/grottoes, have an important environmental and zoological value, serving as shelter for different species of bats and other cave fauna. Its botanical heritage is covered by maquis, typical of the Algarvian Barrocal (Lower Algarve). In the Cerro da Cabeça are located the most deeper endocarsic forms known in the Algarvian carso: Algar Jaw (more than 95 m deep), Algar Medusa (74 m), Algar 60 m (over 70 m).