Fes el Bali is the oldest walled part of Fez in Morocco. UNESCO listed Fes el Bali as a World Heritage Site in 1981 under the name Medina of Fez. Fes el Bali's urban fabric and walls and a buffer zone outside of the walls serve as a preservation of the visual integrity of the location, which is part of the World Heritage Site. The area is believed to be the biggest car-free urban area in the world, while also being home to the oldest university in the world.