Hangang-euro On Jangeo is a freshwater eel restaurant in Deokso, Namyangju, with a view of the Han River. You choose a freshwater eel and pay in advance, and it is par-grilled for you; you then grill it yourself over charcoal on the second floor. Arriving around 4:30 p.m. lets you see the daytime view, the sunset and the night view, and there is a riverside walkway connected to the restaurant. The par-grilled eel still has to be grilled at your table, so it takes some work.