The main feature of the western zone is the crumbled ruin of the Tempio di Giove. Covering an area of 112m by 56m with columns 20m high, this would have been the largest Doric temple ever built had its construction not been interrupted by the Carthaginians sacking Akragas. The incomplete temple was later destroyed by an earthquake.

Lying flat on his back amid the rubble is an 8m-tall telamon (a sculpted figure of a man with arms raised), originally intended to support the temple's weight. It's actually a copy of the original, which is in the Museo Archeologico.