Nanji Island, which used to be a Seoul's landfill site from 1978 to 1993, converted into the environmentally friendly World Cup Park. After a year and five months of construction and landscaping, the park opened on May 1, 2002 with Minister of Environment Myung-ja Kim and Seoul Mayor unveiling the World Cup Park monument.

This 3.465 sq-km park implements various environmentally friendly park management. For example, windmills generate pollution-free electricity to maintain the park's facilities such as offices and camp sites. To prevent air pollution, three Compressed Natural Gas shuttle buses provide transportation in the park in every 20 minutes.

It also features mini marathon course, water fountains, and a nine-hole golf course for the visitors' enjoyment. It also presents an exhibition center that showcases the unique history of Nanji island that used to be a beautiful island, turned into a landfill site and finally converted into a World Cup Park. The park is composed of five smaller parks-Peace, Sky, Sunset, Nanji Stream and Nanji Han River. A panoramic view of Seoul, including Mt.Bukhan and Namsan, Han River and the 63 Building, is seen in the Peace Park. Various wild plants that are known as pollutant absorbers, such as violet, white Dutch clovers and sun flowers, are planted in the Sky Park. The golf course is being built in the Sunset Park to open in June 2002. In addition, a children's playground, multipurpose athletic field, and other facilities are provided in Nanji Stream and Nanji Han River parks.

The park is designated as the most recommended place to visit in May along with Yongsan Family Park by Seoul City.