If you'd like to get a taste of Seoul student life, check out Seoul National University in Gwanak-gu. Why not take a stroll along the riverfront and watch the sunset while you're here? It's also full of great shops and restaurants, so you can spend the afternoon having a wander. Seoul has other landmarks you might want to visit such as Gyeongbokgung Palace.
Gyujanggak Library of Seoul National University is worth a pic or two when discovering Gwanak-gu. Why not take a stroll along the riverfront and watch the sunset while you're here? It's also full of great shops and restaurants, so you can spend the afternoon having a wander.