Fes was remarkable! It is said to be the world's best intact medieval Arabic city, and interestingly, the world's largest continuous urban car-free zone. Rightfully, it is a UNESCO World Heritage Site.
While there, I befriended two Moroccan architects who worked on preserving Fes for UNESCO. They gave a much appreciated, local perspective.
I was fascinated to learn that UNESCO's strategy for preserving the Madina (Old City), was to employ all the skilled craftspeople (for which Fes is renowned) in a co-op which guarantees them an income, and house them all within the Madina, therefore serving a dual purpose of preserving the craft and cultural heritage on the one hand, and the architecture on the other.