The archipelago is part of the Iberian plate and consists of ancient granite rocks that are approximately 280 million years old.
The Fort of São João Baptista was built using stones scavenged from the ruins of a monastery that previously occupied the island.
The reserve is the only place in the world where the Berlenga Thrift (Armeria berlengensis) grows naturally.
The seabed around the islands is a maritime archaeological site containing numerous shipwrecks dating from the Roman period to the 20th century.
The main lighthouse on Berlenga Grande, the Duke of Braganza Lighthouse, is solar-powered.
During the 16th century, the islands were used by monks of the Order of Saint Jerome to provide aid to crews of shipwrecks.
The reserve serves as a critical nesting site for the Yellow-legged Gull and the rare Common Murre.
A series of sea caves, including the Furado Grande tunnel, can be navigated by small boats depending on tide levels.
The water clarity around the reserve often exceeds 20 meters, supporting a high concentration of sea anemones and sponges.
The Berlengas Nature Reserve is an archipelago located 10 to 15 kilometers off the coast of Peniche, Portugal, consisting of the Berlenga Grande and the smaller Estelas and Farilhões islets. It is a UNESCO World Biosphere Reserve recognized for its high biodiversity and critical role as a nesting ground for seabirds. The landscape is dominated by granite rock formations, sea caves, and clear Atlantic waters. The Fort of São João Baptista, a 17th-century fortification, is perched on a rocky promontory connected to the main island by a narrow stone bridge. Marine life around the reserve is protected, making the area a primary site for snorkeling and diving. Rare flora, including the endemic Berlenga Thrift (Armeria berlengensis), thrives in the specific microclimate of the islands. Due to its status as a protected area, the number of visitors allowed on the main island per day is strictly capped by the ICNF (Institute for Nature Conservation and Forests). The reserve remains an essential stop on the migration path for various European and Atlantic bird species.
The view from the footbridge connecting the main island to the Fort of São João Baptista.
Book your boat transport and island access permit well in advance, as visitor numbers are strictly limited by daily quotas.
Pack a windbreaker even in summer, as the Atlantic winds can cause temperatures to drop rapidly on the cliffs.
Bring your own drinking water and trash bags, as there are no natural springs on the island and a strict pack-in, pack-out policy applies.
Attempting to visit without a pre-booked boat ticket, as ferry capacity is limited and often sells out.
Boat access is entirely dependent on sea conditions and is limited to the spring and summer tourist season.
Stay strictly on marked paths to protect endemic flora; do not approach or feed the wildlife.
