If you want to see a show while you're in town, try and grab some tickets at Myeongdong Nanta Theatre in Myeong-dong. It's also full of great shops and restaurants, so you can spend the afternoon having a wander. If you enjoy the show and want to see another, Myeongdong Theater, Dongrang Yesool Center Daegeukjang, and Cecil Theater are all a short walk away.