Seongwon Kalguksu is a specialty shop near Gaegeum Station and Gaegeum Golmok Market that serves one dish: kalguksu. The noodles come in an anchovy-based broth topped with minced scallions, red pepper powder, and frying batter, giving it a spicy, thick consistency. A line forms at lunch, but it moves quickly, so the wait is not long. Parking is difficult, so you have to use the street parking lots nearby.