Marrakech's main square and the heart of the old city — food stalls, storytellers, musicians and henna artists fill it every evening, and it looks completely different by day and by night. It is worth visiting at both times if you have a full day in the city.
The square sits at the edge of the medina, so it is best reached on foot from a nearby parking area rather than driven into directly — the surrounding lanes are pedestrian and often too narrow for cars.
Photo: Petar Milošević / Wikimedia Commons (CC BY-SA 4.0)