At a distance of around 10 km from Peniche, the Berlengas Archipelago is a natural haven maintained in a virtually unspoilt state. Constituted by three groups of small islands – Estelas, Farilhões and Berlenga – the zone maintains extensive undergrowth, including unique species such as the Armeria berlegensis and Herniaria berlengiana, whose names indicate their origin.
Many bird species find an ideal refuge here in order to nidify or as a stopping point in their migration routes. By far the most apparent presence is that of seagulls, which can be seen everywhere. Endangered species can also be seen such as the puffin, which resembles a small penguin and has been chosen as the symbol of a Nature Reserve. The protected area also covers an important 985-hectare marine reserve, with a highly diversified range of animal life.