Italy: Imperial Rome and more
I can recommend a lovely little book by Robert A. Kaster, professor of classics at Princeton, called "The Appian Way - Ghost Road, Queen of Roads" published in 2012 by The University of Chicago Press in its Cultural Trails series.
Prof. Kaster drives up and down the Appian Way from Rome to Brindisi and back and relates the story of this road from Roman times onwards. He also gives us insight into the logisitics of his trip and some tips for the modern tourist wishing to travel the road.
I found the book on Amazon.