By saving the colossal engineering feat that girds its circumference the city of Ferrara could conserve its particular urban identity, where virtually all other cities were condemned to lose theirs in a sprawl of faceless and squalid suburbs: the walls could therefore come to play a role analogous to that of the canals of Venice - a clear line of demarcation from which one departs in the search for the treasures of art and history guarded within.
Once underway, work continued for 50 months and workmen alone racked up 160,000 man hours of work, not to mention the efforts of architects, engineers, surveyors, historians, and archaeologists. More than a million original bricks were uplifted and replaced, while only 10% of new material was used during a rigorous restoration plan that unearthed 263 artillery positions and the foundations of five towers.
Today, the walls, once undermined and almost smothered by millions of plants, form a neat red line faced by the green of the unspoiled countryside around the city. No car cemeteries, no gypsy encampments, no shanty towns disturb the land that was once the private hunting ground of the Estense Dukes.
Now that same land is for everyone and, although it's true that wars are ever with us, it's good to think that a city can still defend itself behind its walls.