Seoul:
is the capital of South Korea (the Republic of Korea) and one of the most populous cities in the world. The city is the political, cultural, social and economic centre of South Korea, as well as an international centre for business and global organizations. It is one of the most visible symbols of the Korean economic Miracle on the Han River. Due to the efforts of the government in regard with the environment, Seoul's air pollution levels are now on par with those of Tokyo and far lower than those of Beijing. Seoul's metropolitan area accommodates six major parks, including Seoul Forest, that opened in mid-2005. The Seoul Metropolitan Area is also surrounded by a green belt aimed to prevent the city from sprawling out over the neighbouring Gyeonggi Province. These lush green areas are frequently sought after by people resting on the weekend and during vacations. In addition, the Seoul area is also home to three amusement parks: Lotte World, Seoul Land, and Everland, located in the nearby suburb of Yongin. Of these, Lotte World is the most frequently visited. Other recreation centres include the former Olympic and World Cup stadium the Korea Finance Building, and the City Hall public lawn.