Curse of the Crimson Throne
Thassilon
An ancient empire that occupied much of what is now Varisia many thousands of years ago, it was ruled by the decadent but god-like wizards known as runelords. Monuments to lost Thassilon still dot the countryside of Varisia, shielded from the passage of time by powerful magic that is only now beginning to fade.
The deepest levels of Korvosa’s Vaults appear to be Thassilonian in origin, as do other monuments scattered around the city, and the party recently found evidence that the entire complex was once part of the domain of Sorshen, the Runelord of Lust.