 These order were dispatched because the king considered that this coastal fortification was of great importance for the kingdom.As Sir Diogo de Sousa was the governor to complete the fortress in 1740, his family crest were placed over the gate on October 22 of that year, precisely on the day of the monarch's anniversary.The fortress is a star fortification with a quadrangular shape with four bastions in each end; two facing the sea (Conceição and São Francisco de Bórgia bastions), and two facing the land (São José and São Filipe e Diogo bastions).