Final answer:
The Temple of Minerva at Veii is the Etruscan architectural piece that features an Apollo sculpture known as the Apulu or Apollo of Veii.
Step-by-step explanation:
The Etruscan architectural piece that features a temple at Veii with an Apollo sculpture is the Temple of Minerva. The terracotta figure known as the Apulu or Apollo of Veii was discovered at this temple site and is a significant example of Etruscan sculpture, characterized by its dynamic posture and decorative folds of drapery. Notably, Apulu was part of a larger tableau that stood on the roofline of the temple, which was a unique Etruscan practice. The statue is attributed to the artist Vulca, the only Etruscan artist known by name, and showcases the blend of Etruscan and Greek influences.