The Berlengas Archipelago is located 16 km west of Peniche. The archipelago is a powerful granite block. Its territory belongs to the parish of São Pedro, in the municipality of Peniche. The most important part of the island is called Berlenga and represents more than two thirds of the total surface of the island. The other part is called Ilha Velha and is separated from the rest of the island by maritime erosion. The Berlenga archipelago is a protected area that integrates nature reserves by the nature and forest conservation institute (ICNF) and has been considered a UNESCO Biosphere reserve since 2011.