Fes or Fez (Arabic: فاس‎ Fās, Tifinagh: ⴼⴰⵙ) is the second largest city of Morocco, after Casablanca, with a population of approximately 1 million (2010).
It is the capital of the Fès-Boulemane region.
Fes, the former capital, is one of the country's four "imperial cities," the others being Rabat, Marrakech and Meknes.
It comprises three distinct parts, Fes el Bali (the old, walled city), Fes-Jdid (new Fes, home of the Mellah) and the Ville Nouvelle (the French-created, newest section of Fes).
Fes el Bali (Arabic: فاس البالي‎) (English: Old fes ) is the oldest and walled part of Fes.
Besides being famous for having the oldest university in the world, Fes el Bali, with 9600 streets and a total population of 156 000, is also believed to be the world's largest contiguous car-free urban area.

Fes el Bali is a UNESCO World Heritage Site since 1981.