Diu is a town in Diu district in the union territory of Daman and Diu, India. The town of Diu lies at the eastern end of Diu Island, and is known for its fortress and old Portuguese Cathedral. It is also a fishing town. It is the tenth least populated district of India. Diu has been selected as one of the hundred Indian cities to be developed as a smart city under PM Narendra Modi's flagship Smart Cities Mission. The town and district were historically part of the Saurashtra region of Gujarat and an important port on trade routes of Arabian sea of Indian Ocean. The languages spoken in Diu include Gujarati, Portuguese, English and Hindi.