It is a monument datable to the beginning of the sixth century BC and is therefore the oldest Doric temple in Sicily or at least the first corresponding to the model that was developing in the Greek world concerning the peripteral temple with stone columns. It has been undergoing several transformations: it was a Byzantine Church, which still has the front of staircase and traces of a median door, and then it became a Muslim mosque. Then the Norman church of the Savior overlapped the buildings, which was then incorporated into a sixteenth-century Spanish barracks, and in private buildings, but you still see some architectural elements. These successive overlapping severely damaged the building that was rediscovered in 1860 in the barracks and was brought fully to light by excavations carried out by Paolo Orsi in the years between 1938 and 1942.
Of the original structure (58.10×24.50 m), which included six columns on the short sides and 17 on the long sides, two columns were left standing on the south side, with part of, and other columns on the same side and the appended in front East to West The base has been restored. The columns were high m.6.62 (only the barrel) with a total height of m.7.98 with the capital. The upper part of the temple was covered with clay and some fragments dell’acroterio central stone is preserved at the Museum “Paolo Orsi” in Syracuse, where you can see a complete model of the temple and also a video showing the inside of the building.
On one of the steps of the east side is engraved an inscription of dedication to Apollo and you can read the name of the architect, very rare for a greek temple.