The city of Sea Gate is the closest thing to a hub of civilization in Tazeem. The city is nominally based around trade houses, with a central house for blacksmiths, coopers, butchers, etc. The flat space at the top of the sea wall is approximately 20 acres, and nearly every inch has been built up with houses and shops. Even the narrow corridors between the buildings are covered because of the risk of attacks from drakes and other aerial predators.
At the eastern side of the sea gate stands the Lighthouse, a cylindrical tower that is the center of all learning in Tazeem. The Lighthouse has 20 floors and is a nexus for merfolk explorers/chroniclers. The walls are lined with leather scrolls filled with maps, spells, archeological finds, lists of plant and animal classifications, and theoretical discussions of The Roil.