Chittagong is the second largest city in Bangladesh located in the southeast along the coast. It has a population of over 5 million people and was historically part of several kingdoms and empires. Some important historical sites include Shalban Bihar, Mainamati ruins, and various religious sites such as Chandranath temple. Chittagong has a large port and is a commercial hub with a focus on industries like shipbuilding. It faces issues like urban flooding, refugees in Cox's Bazar, and conflicts in the Chittagong Hill Tracts. However, the government is undertaking projects to address problems and develop the city and region further.