We're living in San Paolo, a neighborhood that didn't exist until the 1920s. Even so, the wall-building systems used in the area demonstrate remarkable skill and complexity. Here's one example. The wall at right was once stuccoed, but with the stucco in decay, one can see what's inside: layers of rocks and irregular-sized chunks of tufo, separated by horizontal ribbons of brick, all held together with cement. Such walls are common not only in San Paolo, but throughout the city. Bill
