Aigues-Mortes is located on a flat Camargue marshes, about 30 km north-west of Saintes-Maries-de-la-Mer. It's beautiful medieval town with the architecture dating from the 13th century. Remarkably well preserved, the walls and ramparts are a visual delight.
You can park your car in the northern parking lot just next to the town's walls (GPS: 43.568209, 4.191006). If there is no free place at all, you can drive to the southern parking lot (GPS: 43.564314, 4.189033).
Inside the town try to walk the main street called Grande Rue Jean Jaures which leads to beautiful central square (A; GPS: 43.566726, 4.190060) - Place Saint-Louis. The church of Notre-Dame des Sablons is located on one side of the square and a statue of St Louis is located in the middle. As you can see from the video, there are lots of cafes and restaurants on this nice square.
As you already know, this is walled town so a walk around it makes you really feel the history of this 13th century fortification. The ramparts and towers around Aigues-Mortes are amazing. They are very solid and interesting, additionally with great views across the town and the salt plains which are in different colours from white to almost red. The lazy walk takes about one hour as you can stop frequently to read the information and to see the presentations and some interesting art work. You can also go beyond the walls through the southern gate - Porte Sud (B; GPS: 43.565219, 4.189545) to look at the town from a different perspective.