Identify.

Temple of Apollo Palatinus, Palatine Hill Rome, Octavian, vowed at Battle of Actium (31 BCE), opened in 28 BCE, site of lightning strike (gods chose this spot), built near a house that could have been Augustus's in the city (modest), Portico attached to the front, library holding sacred texts next to it (Sibylline Books), supposedly Augustus was a very religious person, high concrete podium, marble (corrara) temple