If your trip to Subu-ri is all sorted out but your travel itinerary is a bit on the empty side, let us give you a few hints and tips.There's nothing like visiting new places. While you're in the area, Seongjusan Recreational Forest and Gaehwa Art Park should be among them. If you still have plenty of energy and space on that itinerary, Boryeong Coal Museum is also calling your name.