The noted xtian scholar, Stephan Pfann excavated at "Nazareth" in the late 90's and found a single family farm....not a city.
http://www.uhl.ac/NazarethVillage/nazareth.html
http://www.uhl.ac/NazarethVillage/nazareth.html
Quote:A survey of the area was conducted in February 1997 by CSEC’s archaeological staff. Four seasons of excavation, licensed by the Israel Antiquities Authority and under the joint direction of Ross Voss and S. Pfann, have been carried out by CSEC, with the help of students and local volunteers. These excavations have confirmed the land to be a complete Roman Period terrace farm with a winepress, watchtowers, olive crushing stones, irrigation systems, and an ancient quarry, and have illuminated previously unknown aspects of terrace farming in the Galilee.
The character of the site indicates that the valley and its slopes likely comprised the property of a single family’s farm, which produced a variety of crops. Most of the extent of the original farm has been preserved. This farm remains the most important, and perhaps the only, witness to the life and livelihood of the ancient Nazarenes.