The World Cup Park was established on Nanjido, whose name means the island of "abundant orchids and gromwells." The island was once a wonderful ecosystem where flowers flourished season in and season out, and migrant birds came to visit every year.Unfortunately, Nanjido was used as a landfill site between 1978 and 1993 and the once beautiful ecosystem became a smelly place full of trash and sludge. However, the Landfill Recovery Project began in 1996, once again restoring life to the barren wasteland. Plants and animals returned to the area and it was christened the World Cup Park in May 2002. Each of the five divisions of the World Cup Park (Pyounghwa Park, Haneul Park, Noeul Park, Nanjicheon Park, and Nanji Hangang Park) represents an aspect of the radical transformation of Nanjido back into an ecological haven.Haneul Park (Sky Park) is full of lush Eulalia and home to the Seoul Eulalia Festival, held every year in October when the grass is in bloom. Although the park is open to visitors during the daytime, the park is usually closed at night to reduce the negative effects of visitors on the native plants and animals. During the festival, however, the park remains open until 10 p.m. and the entire grounds are aglow with light. Visitors not only get a beautiful view of the city lights and Hangang River, but can also enjoy the variety of events and performances offered during the festival period.