Seoul began its sister city program in 1968 with Taipei, Taiwan. Since then, Seoul has signed agreements on the establishment of sister ties with 23 cities and friendly relationship with 48 cities around the world. The main purpose of the sister city program is to strengthen relations between Seoul and other international cities in an effort to establish global cooperation and promote cultural understanding. Listed below are general information and links to the official websites of Seoul’s sister cities and friendship cities. For more details on Seoul’s sister and friendship city program, please contact the International Cooperation Division of Seoul Metropolitan Government.