Chittagong (Bengali: চট্টগ্রাম, Chôţţogram) is Bangladesh's main seaport and its second-largest city and the 11th largest city within the Organisation of the Islamic Conference and also the 56th largest urban agglomeration in the world.[5] The capital of the eponymous district and division, it is situated in the southeastern portion of the country, was built on the banks of the Karnaphuli River, and has a population over of over 2.5 million.[4]
