K-water Busan Regional Office sits at the Nakdong River Estuary Barrage on Eulsukdo, a lookout point where the lower Nakdong River meets the sea. Inside, visitors see a model of the old estuary barrage and related exhibits before heading out to the outdoor observation deck. The deck can be reached by stairs or elevator, and the interior has a seating area and a small cafe. The observation deck alone does not offer much to see.