Howrah (alternatively spelled Haora ) is a metropolitan city within Howrah district, in the Indian state of West Bengal. It is the headquarters of the Howrah Sadar subdivision. Howrah is located on the western bank of the Hooghly River. It is a part of the area covered by Kolkata Metropolitan Development Authority (KMDA). Howrah is an important transportation hub of West Bengal and a major gateway for its twin city of Kolkata.