The Archaeological Walk is an archaeological park connected to the Roman walls and includes gardens and sculptures. This walkway takes you on a quiet walk around the inner part of the old town perimeter between the city walls. The inner walls are mainly Roman and date back to the 3rd century BC, while the outer walls were laid by the British in 1709 during the War of the Spanish Succession, and are 4 meters thick. Strolling here is a great photo opportunity and the best way to discover all over the old city.