If you want to add some extra culture to your escape, put Gimpo Tea Etiquette Museum on your itinerary. See if guided tours are available or just look around in your own time.
Situated in Gimpo, this museum is worth a look. But you'll find loads more to explore in this area. Odusan Unification Observatory, Gimpo International Sculpture Park, and Munsusanseong Fortress aren't too far away from Gimpo Tea Etiquette Museum.