Zaouia of Sidi Ali Azouz

Tomb in Zaghouan

Image by Lauren Keith Lonely Planet

Zaghouan's architectural highlight is this tomb complex dedicated to the city patron of Tunis, which has a green fish-scale dome and, inside, superb tiled walls, colourful stained glass and intricately carved plaster ceilings. If the doors aren't open, just knock. The guardian might expect a small tip.