There are still standing nine columns of the south side and two of the north of the peristyle, and one of the antae and an inner column of the pronaos.
A small Ionic temple of marble with two caryatids between antae stood on this substructure.
The western or outer front is flanked on each side by a projecting wing, with a row of three smaller Doric columns between Antae at right angles to the main portico.
On a parapet at the rear of each chamber a single slender Ionic column between two antae supported an Ionic entablature.
In it were carved out four chambers or reservoirs all connected and a porch consisting of three pillars between two antae in which the side walls ended.
Wood was also used for all the columns, doorposts, and antae (rrapacrTetScs), and in some cases the walls of the rooms were lined with wood, carefully fixed by dowels, the holes for which still exist.