Casablanca may be the cosmopolitan, industrial and economic heart of Morocco (and its largest city), but it is one of the less endearing of the country's sights. With a small, unassuming medina and a traffic-congested ville nouvelle, travellers arriving via Casablanca may be tempted to find the first train out to nearby Rabat. The awe-inspiring Hassan II Mosque and happening nightlife, however, are worth at least a day of your Moroccan itinerary.