The Zambujal Castro is one of the most important Copper Age settlements in the peninsula of Lisbon, and whose culture lasted until the beginning of the agrarian periods of Iberian history.

[1][3] Based on the excavations and analysis of Sangmeister, Schubart, and Trindade (1969),[4][5] the site went through several successive phases of occupation and development:[1][3] Although uncertain as to the date, the fortification was partially destroyed (principally the central structures) to construct a rural adobe farmhouse (today known as the Casal do Zambujal).

[1][3] The site is located in the semi-rural area of the parish of Santa Maria do Castelo e São Miguel, along one of the flanks of the Serra do Varatojo mountain range.

Situated on a platform, the location extends down towards the Sizandro River, approximately 3 kilometres (1.9 mi) from the urban center of Torres Vedras.

[1] To prevent further ruin of the archaeology, the Municipal Council of Torres Vedras acquired 48 hectares to guarantee the protection of the national monument in 2006.