Seongsan sits at the easternmost point of Jeju Island and is directly connected to northern Biyang on Oji by a long bridge. Container transportation service for overseas imports is available here.
Businesses
Seongsan Sashimi — accepts Hallim fish.
Seongsan Supermarket — basic inventory items; accepts food deliveries that boost the local Town Bonus.
Seongsan Warehouse — south of town. Intermediate delivery point that converts containers into box pallets.