Busan, SOUTH KOREA:  Busan (Korean: 부산), 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.  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.  This White Border Era (1915-30) postcard is in good condition.