It is situated to the north of the parish of Oeiras e São Julião da Barra, Paço de Arcos e Caxias.

[2] Tradition suggests that the locality of Porto Salvo was constructed by crews from ships travelling to and from India, during the Portuguese period of discovery.

[3] In the middle of a great storm, these sailors promised the Virgin Mary that if they saved their lives, that they would build in her honour a hermitage on the highest point on land.

[3] In 1679, by order of John V a fortress was constructed under the authority of the Count of Cantanhede, later Marquess of Marialva, who was responsible for the Tagus' defences and protection from Spanish attacks.

[3] Pinho Leal wrote of Henrique José da Costa Pereira: "The viscount had a magnificent estate in Como, Italy, and many properties in that kingdom.

Omni Aviation and TAP subsidiary White Airways also have their head offices in Port Salvo, including the Edifício Orange.