<p>A lavishly decorated, rectangular hall of a late-Republican/early-Augustan residence, commonly known as the “Aula Isiaca”, is located on the *Palatine beneath the “Basilica” of the Flavian Palace (Iacopi fig. 1; Richardson); the room, which features an apsidal E end and a barrel-vaulted ceiling, is the only portion of the <i>domus</i> which survives the later Neronian and Flavian interventions on the site (note that the apse is rendered in brick, so it may be of post-Augustan date, Iacopi 35; Carettoni). While the <i>opus caementicium</i> and <i>opus reticulatum</i> walls provide a general late-Republican/early-Augustan timeframe (Carettoni fig. 29), the late Second-Style wall-paintings, which cover the extant walls and vault, allow for a date <i>c</i>. 19 B.C. (Iacopi 5-6, who argues against characterizing the images as Third Style). Since this date is based upon stylistic criteria, it can vary: Coarelli suggests <i>c</i>. 25 B.C., Ling “soon after 30 B.C.”, and Richardson simply “an Augustan date”. There is surprisingly little scholarly speculation as to the proprietor of this once-prominent residence, though Coarelli hypothesizes Mark Antony may have owned it and, after his death, Agrippa (a theory mentioned without prejudice by Papi 26); meanwhile, Ling speculates that the room may have been part of the *Domus of Augustus.</p>