The walls are made from pisé, a reddish pink clay, which glows spectacularly in the setting sun. A common question concerns the many holes dotted all over the ramparts. They are not for nesting birds, or from the days of riflemen as some locals will have you believe, but are in fact holes to facilitate the wooden scaffolding that is erected regularly for the upkeep of the walls.
A popular way to circumnavigate the ramparts is in a calèche – a horse-drawn carriage. The whole trip takes about an hour. Take a map with you so you can follow where you are – the driver may not speak English.