Located less than 5 km from Vila do Bispo, Praia do Castelejo is a beautiful Atlantic beach, set between towering black cliffs. The main feature is a curiously shaped single island rock, which marks the landscape and lends the beach its name, Castelejo, meaning small castle. Low tide invites you to walk across to the nearby beaches. This spot has been known since prehistoric times, preserving traces of a dense cluster of the remains of shells dating from the Mesolithic-Neolithic periods. This shell bed is proof of human presence going back 8,700-6,450 years. In addition to the usual surfers, this beach is popular with fishermen and shellfish harvesters from Vila do Bispo, as they perpetuate their ancestral activity of collecting the much-appreciated seafood in the region, the goose barnacle, or percebes, as it is known here. To the eastern side of the beach is the Miradouro do Castelejo, a viewpoint of special interest to local fishermen. It is here that they come to inspect the conditions of the sea, before venturing off to work. The beach is part of the Natural Park of Southwest Alentejo and Costa Vicentina.