Eberron - Return of the Lich Queen
Regalport is the seat of power for the Seadragons and the capital of High Prince Rygar ir’Wynarn’s Principality. It lies on the eastern shore of Greentarn island in the Lhazaar Principalities.
It is the largest and most prosperous town of the Principalities and is sometimes called the “Jewel of the Lhazaar Sea”.
The town is the port of call for the Seadragons and their fleet of 20 vessels. It’s ruler, High Prince Rygar, who claims to have a royal Gallifaran bloodline, wishes to unite the various principalities, but is currently seen as a leader among equals, though he represented the region at Thronehold.
House Thuranni have their headquarters in Regalport after having accepted an invitation by then High Prince Horget Black twenty-five years ago.