In 2023 Seongnam, South Korea became the City of Fullerton’s newest Sister City. Seongnam is a largely residential City and the second largest City in the Gyeonggi Province, which is located immediately south of Seoul and belongs to the Seoul National Capital Arena. Seongnam is the first planned City in Korea’s history and with a population of nearly one million people.

Seongnam is defined by its strong economy, active arts scene, and an engaged focus on international relations. It is home to companies like Nexon (an online game provider), NHN (a global IT company), Telechips (a fabless semiconductor company), Kakao (an IT and software services company), and SK Chemical (an eco-friendly solutions provider).

Seongnam provides excellent cultural resources for visitors, including the Pangyo Museum, Seongnam Children’s Library, Land and Housing Museum, Seongnam Arts Center and the Folk Craft Exhibition Hall. In addition, the City offers historical landmarks including the famous Namhansanseong Fortress (a UNESCO World Heritage Site), Daegwangmyeongjeon Bongguksa Temple, and the Bundang Daegwangsa Temple.

Seongnam is also home to the Seongnam FC professional football club that competes in the K League 2- the second tier of South Korean football.