Busan

Busan (Korean: 부산, .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%}pronounced [pusan]), officially Busan Metropolitan City, is South Korea's second most populous city after Seoul, with a population of over 3.4 million inhabitants as of 2017.[4] Formerly romanized as Pusan (and Fuzan under Japanese rule), it is the economic, cultural and educational center of southeastern South Korea, with its port being South Korea's busiest and the sixth-busiest in the world.[a] The surrounding "Southeastern Maritime Industrial Region" (including Ulsan, South Gyeongsang, Daegu, and some of North Gyeongsang and South Jeolla) is South Korea's largest industrial area. The large volumes of port traffic and urban population in excess of 1 million make Busan a Large-Port metropolis using the Southampton System of Port-City classification.[6] Busan is divided into 15 major administrative districts and a single county, together housing a population of approximately 3.6 million. The full metropolitan area, the Southeastern Maritime Industrial Region, has a population of approximately 8 million.[7] The most densely built-up areas of the city are situated in a number of narrow valleys between the Nakdong and the Suyeong Rivers, with mountains separating most of the districts. The Nakdong River is Korea's longest river and Busan's Haeundae Beach is also the country's largest. During the Korean War, the city was famously known for the Battle of the Pusan Perimeter, as the most of the country was overrun by North Korean forces only to be pushed back by the United Nations forces.