Part 8/11:
At depths of around 10 meters, we encounter underground rivers such as Rio de la Ciudad, a somber testament to the city's rapid urbanization during the 20th century. Once vibrant waterways, these rivers now lie encased beneath concrete, illustrating the sacrifices made in the name of progress. The interaction between urban planning and historical preservation remains a critical concern, as civic leaders wrestle with how to reconcile their past with the challenges of modern living.