If your trip to Onsan-eup is all sorted out but your travel itinerary is a bit on the empty side, let us give you a helping hand.There's nothing better than discovering new places. While you're staying here, Ulsan Grand Park and Jangsaengpo Whale Museum should be among them. If you still have plenty of stamina and space on that itinerary, Ulsan Museum is also whispering your name.