The final transformation of the Walls into a place of delight happened thanks to Maria Luisa of Bourbon, Duchess of Lucca from 1817 to 1824, who used the skills of architect Lorenzo Nottolini, to whom we also owe the current arrangement with the central route reserved for carriages and two lateral routes for pedestrians.
Maria Luisa's constant concern was to protect the decorum of the Walls, which were now destined to accommodate the elegant promenade of carriages and pedestrians. In 1819, she prohibited the transit of carts and barrows on the Walls and forbade the introduction of horses or other beasts of burden into the bastions.

Horsemen were not allowed to pass over parapets and benches. Throughout the 'muraglia' (Walls) the cheese wheel throwing game, top playing, playing with bocce balls and ball games could not be practised, since they were only permitted inside the bastions.
During the day, it was forbidden to use the ditch surrounding the Walls for 'bathing or washing', while the prohibition to 'walk or stand naked outside the water' also applied at night.

Other prohibitions prevented hanging clothes and linen on trees.
Maria Luisa's successor, her son Carlo Ludovico, continued this protective action and in August 1835 introduced a prohibition concerning 'Chickens, Hens or other such Animals' roaming undisturbed on the Walls Curtains, bastions and terreplain.