Nowon Dumulmaru is a cafe in Sanggye-dong, Nowon-gu, Seoul, located where the Danghyeoncheon and Jungnangcheon waterways meet. It sells coffee, snacks, sweet potatoes, and ramyeon, and outdoor seats allow cooking instant ramyeon on the spot, with ice cream and roasted sweet potatoes available alongside coffee. Outdoor seating and family seats are on the second-floor terrace and third-floor rooftop, and weekday afternoons around 4 p.m. are quiet. Indoor seating holds fewer than ten people, so sitting inside is difficult.