The Temple of Apollo (Tempio di Apollo) on the island of Ortygia in Siracusa, is a Greek temple dating from the 6th century BC. This is the oldest known Doric temple in Western Europe. An inscription says that the temple honors Apollo, but after Cicero came to Syracuse, he wrote that the temple was dedicated to Artemis.
Regardless, the temple was eventually devoted to neither – it was turned into a Byzantine church and then the Muslims took over and converted it into a mosque. Later, under Norman rule, it was turned back into a church.
Today the building is in ruins, but its imposing size is still evident - 58 x 24 m or 190 x 70 ft. It occupies a large part of Piazza Pancali. The dedication inscription is on the top step of the base.