Chicago,
The Third Largest Metropolis in the U.S.A. City of Grandeur and Splendor. City of Filth and Decadence. A metropolis on the side of a small sea and towering over a state known for long stretches of mostly nothing and more nothing. For the mages of the city, it's a place of recent wounds and still smoldering battlefields. It has burned and it has bled but it still remains.
For a group of newly awakened mages drafted into investigating a disappearance and a mystery. It is a city of opportunities.