Due to its geographic position, the hilltop of Monsaraz always occupied an important place in the history of the municipality, having been occupied by different peoples since the pre-historical record. It is one of the oldest Portuguese settlements of the southern Portugal, occupied since pre-history, whose examples of permanent habitation include hundreds of megalithic monuments. These include the neolithic remains of: Megalithic Monuments of Herdade de Xerez, Olival da Pega Dolmens, Menhir of Bulhoa, Rocha dos Namorados Menhir and Outeiro Menhir. The hill, on which the main settlement is located, was a pre-historic fortification, or castro, that was the basis of pre-Roman occupation and funerary temples, carved from the local rock.