View from Sion Fort --Artist: Wales, James (1747-1795) Medium: Etching, coloured Date: 1800

From the vantage of Sion fort, the view opens out to the island of Mahim, which was occupied by the Portuguese in the 16th century. In the 1670s the convent of Our Lady of Salvation was built on the island, and a Franciscan church constructed in what is now Dadar. In the 17th century, the Englishman John Fryer wrote of a customs house and a guard house on the island.