Tripartite Building (Capitolium)
The Tripartite Building (11 x 23 m) occupies the westernmost area of the northern side of the forum. The building consists of three rooms, each with a large, centrally positioned door facing the Forum. The rooms are recessed from the forum by a broad porch, which was approached by five steps from the forum pavement. Traces of extant masonry demonstrate that the porch was enclosed, forming an anteroom in front of the three rooms. A masonry pedestal for a statue is situated at the back of Room 2, while a large exedra forms the back wall of Room 3.
The Minerva Inscription was recovered from Room 2, reused as spolium in a late-antique floor:
[M]INERVAE
AVGUST SACR
M’ OTACILIVS MYSTES
ET AEDEM D. S. P. F. C.
L. D. D. D.
Dating to the Augustan period, the inscription refers to the construction of a public temple to Minerva Augusta, allotted by the city council (decuriones).
Given the building’s tripartite structure and the epigraphic reference to Minerva, together with the sculptural finds, the building probably served as the Capitolium, a symbolic replica of Rome’s Capitoline temple dedicated to Jupiter, Juno, and Minerva.