Howrah (/ˈhaʊrə/; .mw-parser-output .IPA-label-small{font-size:85%}.mw-parser-output .references .IPA-label-small,.mw-parser-output .infobox .IPA-label-small,.mw-parser-output .navbox .IPA-label-small{font-size:100%}Bengali: [ˈɦao̯ɽa]; alternatively spelled as Haora)[12] is an important city[13][3] of Kolkata Metropolis in the Indian state of West Bengal. Howrah is located on the western bank of the Hooghly River, opposite its twin city of Kolkata.[3] Administratively Howrah city lies within Howrah district and is the headquarters of the Howrah Sadar subdivision. Howrah city also falls under Kolkata Metropolitan Development Authority. Howrah station is an famous transportation hub and also a gateway to Kolkata’s oldest CBD (BBD Bag/ Dalhousie) viia Kolkata Metro Rail’s Green line and Howrah Bridge. Howrah Rail Junction is the largest railway station of India and it is extensively connected to every part of India. The name came from the word Haor—Bengali word for a fluvial swampy lake, which is sedimentologically a depression where water, mud and organic debris accumulate.[citation needed] The word itself was rather used in eastern part of Bengal (now Bangladesh), as compared to the western part (now West Bengal).[14]