Korea has many National Parks, some several hours away, but just the handful around Seoul will keep up occupied for many months.
Additionally, summer is extremely humid..."sweat continuously running down your face like never before humid." We will have to go back and visit in the fall, which is a beautiful time in Korea.
All along the walkway from the subway to the park are vendors with fresh food and many mountain/ outdoors vendors and stores. "Red Face" is a famous brand here and suspiciuosly has a logo similar to North Face. On one street, a Red Face store sat right next to a North Face store...some healthy competition here. You can easily pick something up for lunch here and even get some alcohol. Unknowlingly, Mike and I picked up some mid-Sunday alcohol for ourselves. It was Makgeoli and was just 1500 kwon for a whole bottle (~$1.20). Makgeoli is a un-filtered, carbonated rice wine...and it grows on you after the third glass.