Gangnam is more of a walk around and window shop kind of place. Made famous by the song "Gangnam Style", this district is the home of the rich and famous and the companies they own. Many international companies have their offices here, and many of the famous like to walk around. Kind of Seoul's version of Hollywood. If you have time, head up to Apgu-jeong (a neighboring district where the other rich half like to shop). Gangnam is famous for its shopping, food, and fun places to wander. You can also find COEX nearby with its aquarium, food, theatre, and shopping!