Dongcheon Arena is an indoor sporting arena located in Ulsan, South Korea. The capacity of the arena is 6,234 people and was built in 1998. The following is a list of indoor arenas. ... Ulsan, a metropolitan city in the south-east of South Korea, facing the Sea of Japan (East Sea). ... 1998 (MCMXCVIII) was a common year starting on Thursday of the Gregorian calendar, and was designated the International Year of the Ocean. ...