Large park in northeast Kunming. It was created to hosted the World Horticultural Exposition in 1999, billed as 'Man and Nature, marching into the twenty-first century'.
The event lasted from April 30 to October 31, 1999, and attracted 9.5 million visitors.
If you're a bothany geek, this might be a pleasant experience for an afternoon, especially if you can get student discount. Otherwise; don't bother. The humongous jade store with a million clerks and zero customers is quite a bizarre sight, though.