The sanctuary of Minerva at Portonaccio is an archaeological site on the western side of the plateau on which the ancient Etruscan city of Veii, north of Rome, Italy, was located.

Its most ancient nucleus was tied to the cult of the goddess Minerva and a small temple, a square altar, a portico and stairs from the road were built in about 530-530 BC in her honour.

By the middle of the 5th century BC, all work on the temple was complete and it began a slow decline while the structures sacred to Minerva were renovated on the eastern sector of the sanctuary.

The starting up again of the cult worshipping Minerva, which continued also after the conquering of Veii by Rome (396 BC) is documented by a splendid series of votive statues of classic and late-classic style boys, such as the famous head, “Malavolta” as to indicate the important role of the goddess in the rituals of the passage from adolescence to adulthood that signalled the fundamental phases of the life of the members of the aristocratic families of Veii.

In the 2nd century BC, the tuff mine that destroyed the central area of the sanctuary was opened causing damage to the temple and the sliding down of material downhill.