Bombay Castle (also Casa da Orta) is one of the oldest defensive structures built in the city of Mumbai (formerly Bombay). The current castle is a structure built by the British on the site of the Manor House built by a Portuguese nobleman Garcia de Orta.[1][2] Orta had leased the island of Bombay from the King of Portugal between 1554 and 1570.
The castle was built of local blue Kurla stone and red laterite stone from the Konkan region to the south. The islands came under the hands of the English in 1665, and the East India Company took possession of the castle in 1668. Over the next ten years, they built a defensive structure around the manor.
The castle had four Bastions, three of which were originally surrounded completely with water. These were named the Flag Staff Bastion (where a British Flag had been hoisted), The Flower tree Bastion, and the Tank Bastion. The fourth was the Brab Tree Bastion, known for being near a Brab Tree. This would face the West.[3]
Few records of the original Portuguese castle remain, and historians are trying to piece together the original location of the manor.