The Blue Rose Cycle
The Mecca of all knowledge and technology and civilization in the ancient world. Think Rome and New New York. Its generational festival the Bramblemoot serves as a hiring grounds for elite guards, the Roots and Thorns. The entire city was destroyed during The Paradigm at the end of The Boy campaign; only to be rebuilt at some point and advanced so far in a mithril based technology that a mojority of the populace were ported to another plane through its crown jewel: The Lady Valiant.