Illia

Glass Towers of the Seas
Gnomes in Tieros come from a now destroyed land called Illia. Fair Illia was said to be a fertile plain, dotted with cities of glass. What was once Illia, an isthmus reaching east from Glain, has now sunk into the sea, where the broken, topless towers  can be seen glistening above the waves, and tearing at the hulls of ships below them.