Bun Sok (Wwoof Joy's Farm) told me once that if I have to choose only one park, I should not miss Seounyudo Park. Unfortunately I still don't have the chance to make a trip to this awesome place.
Why Bun Sok; an environment lover herself thought the park is special?
"Seonyudo Park is an award-winning ecological park, created by the conversion of a former water treatment plant. The park successfully enhances Seoul’s liveability by providing a high-quality, environmentally responsible public space which is enjoyable and educational." - CABE