Everyone knows what Marrakech looks like, surprisingly Casablanca is quite a different, more cosmopolitan, European-style city. Wonderful bright sunshine and rich colours make it particularly photogenic too.
Memorable locations were a gigantic, unconsecrated, whitewashed, cathedral which would make an amazing location for a pop video; even more chilling was a disused, French abattoir from the 1930s. Thankfully no signs of blood or gore, but it still has all the grizzly equipment to deal with the poor animals.