Ernakulam district is located within the coastline of the Arabian Sea on the west, Kottayam and Alappuzha districts in the south, Idukki district in the east and Thrissur in the north. It has an area of 2408 sq.km. Kochi city consists of the mainland Ernakulam, the islands of Willingdon, Bolgatty and Vypeen, Fort Kochi and Mattancherry. Kochi - The Queen of Arabian Sea is one of the most interesting cities of India and has one of the finest natural harbours in the world.