Yeouido is a large island (or eyot) on the Han River in Seoul, South Korea. It is Seoul's main finance and investment banking district, and Yeouido Park is a large recreational area located on Yeouido Island in the central part of Seoul. It was once originally covered with black asphalt, and people frequented the place for bicycling and roller-skating. The construction began in 1997, and opened officially in February 1999. It is now the place where many people in the city come to rest and enjoy strolling around, play sports, and cultural events.