Dream Forest is the fourth largest park in Seoul, after the World Cup Park, Olympic Park and Seoul Forest, and has become a part of the lives of 2.67million residents of six districts, Gangbuk, Seongbuk, Dobong, Nowon, Dongdaemun and Jungnang.
In the heart of the forest is a large lake named Wallyoungji, with the 7 m-high Wallgwang Waterfall and the pavilion Aewalljeong, not to mention grasslands twice the size of the Seoul Plaza. Situated on the rim of Wallyoungji stands the traditional Korean hanok building, Changnyeonggungjaesa (No. 40 Registered Cultural Property), in its entire classical splendor.
The 49.7 m Observatory overlooking downtown Seoul is a special attraction point. The breathtaking ridges of Bukhansan(Mt.), Dobongsan(Mt.) and Suraksan(Mt.) roll out to the north, and Mt. Nam and the River Han majestically fill the scenery to the south. Five different wild flower gardens have been created behind the parking lot, such as Suro Garden, Sagaewon, Brown Garden and Hwamokwon, and the Chilpokchi, a waterfall with seven streams, is also worth experiencing.
http://english.seoul.go.kr/life-information/natural-attractions-parks/parks/?pidx=2