The St Mary's Star of the Sea Cathedral is the main place of Catholic worship in the city of Darwin, Australia, and the seat of the bishop of the Diocese of Darwin. During World War II, the first church of St Mary was the seat of the garrison of the military chaplaincy for Australian troops in the city. After the war it became necessary to build a larger structure. The architect was Ian Ferrier, from Brisbane, who was employed by Donoghue Cusick & Edwards at the time, and this firm completed construction after his departure in 1957.