First Appeared: The Wonderful Wizard of Oz (1900)
Founding Father: L. Frank Baum and W. W. Denslow.
Notable Residents: The Wizard, Pastoria
Though the walls of the Emerald City are green as anyone walking down the yellow brick road can see, like so many things involving the Wizard, it is more or less an illusion. The residents are made to wear green spectacles that are said to protect them from the overwhelming brilliance of their radiant city, but in actuality simply make everything green. It is said that when the Wizard arrived near the Emerald City that he was stunned by how green everything appeared and that this was his inspiration for the whole place. But it is later found out that the Wiz didn't build the Emerald City at all, but took it from Pastoria years prior. Either way, the look of the tall, metal gold-and-green city is so captivating that the place manages to strive through all of the books and reside in the cultural imagination resiliently, despite being surrounded in half-truths and lies.