buildings of Alexander Severus
The building projects of Alexander Severus as described within the The Scriptores Historiae Augustae.
...the Porticus Alexexandri Severi is in a totally incorrect position at the end of the Equiria, however, Piranesi may be making a suggestive link between Alexander Severus and the military. The small aedicule Isidis on the Equiria across from the Porticus may also be a reference to Alexander's devotion to his mother--Isis is the premiere mother goddess.
...the baths, aqueduct and his grove all comply correctly within the Ichnographia.
...the Domus (Palace of) Alexandri Severi is mentioned in the Historiae text, but it is not described, and my theory is that Piranesi placed Alexander's (house) Palace along the Triumphal Way (in the reverse mode) because he favored Christianity and the Golden Rule. The Domus Alexandri Severi is also exactly like the description of Elagabalus' Palace near the Porta Maggiore. Could Piranesi be weaving some complicated message which refers to both the reigns of Elagabalus and Alexander (which did follow each other, and they were cousins), where Alexander successfully undid the corruption of Elagabalus and began to turn Rome toward a more Christian and morally sound city and empire?
...not yet sure, but I think Alexander Severus' name is attached to more buildings within the Ichnographia second only to Nero.
The buildings along the Equiria related to the military are: the Officinae Balistarium, the Officinae Scorpiorium, the Templum Castrum, the Naumachia Domitiani, three Circulus with two Ludus, the Officinae Armorum with its attached Officinae machinarum militarium, the Templa Jovis Martis Veneris, and an Aedicula Isidis, all of which translate into a ballista factory, a scorpion factory, a temple dedicated to Castor (the guide to mariners), a stadium for the show of mock sea-fights, exercise fields, a factory for arms and military machines, and a triple temple dedicated to Jupiter, Mars, and Venus and chapel dedicated to Isis. These buildings, moreover, are interspersed with "statues of illustrious men" as well as the sepulchers of many distinguished military figures from Roman history. This concentration of military functions essentially constitutes a design for ancient Rome's main military headquarters.