Ulsan is a metropolitan city in the southeast of South Korea. Big companies such as Hyundai Heavy Industries, Hyundai Hysco, Hyundai Mipo Dockyard, Hyundai Motor Company, SK Innovation and S-Oil. are in Ulsan. Making motors, shipbuilding and petrochemical companies are the main industries in Ulsan. It has the largest area of Korean metropolitan cities but it has the lowest population. In Ulsan, there is a Whale Festival every year to celebrate whales.