places of Nero
Throughout this chapter I will call out the "presence" and significance of Nero. From the towers within his gardens (Piranesi's reference to Nero's watching the great fire of AD 60?) to the other Nero landmarks throughout the Ichnographia. Citing Suetonius as to the placing of Nero's ashes within the area of the Ichnographia's Bustum Augusti.
...read Tacitus' Annals as well. The ancient authors offer a wonderful resource with regard to who built what, and what existed when, and even who knocked down what.