Valle dei Templi Agrigento Perched on top of the Mediterranean, the Valley of the Temples is home to the best-preserved temples in the world. The most impressive is the Temple of Concord, which is in near-intact condition. The rubble that once formed the temple of Zeus was thought to be the largest temple in the world, and the surviving four columns topped with remains of a pediment and entablature of the Temple of Castor and Pollux is one of the symbols of Sicily.