A team of scholars made this video on how the city of Sicily looked like in the olden days. The video won the 2013 CHNT Video Award, and here is how it is presented on the youtube description:
“The ignorance or the mis-knowledge of the archaeological background of a modern city can negatively affect its economy and cultural growth, limiting attractivity and spreading erroneous or distorted messages over media. The Sicilian case of Siracuse is definitely emblematic. Founded by the Corinthians in 733 BC, birthplace of poets and thinkers as Epicharmus and Archimedes, visited by many prominent figures of Greek culture as Pindar, Aeschylus and Plato, Syracuse over centuries became one of the most beautiful, influential and wealthy among the Greek cities of the Mediterranean basin, as the majestic temples testified. Nonetheless, regardless the historical background and the imposing visible remains of that past emerging everywhere in the actual urban area, Syracuse, since 2005 World Heritage site, has never played the role of quintessential archetype of Greek city both in the scientific literature and the mainstream.
Against this scenario a virtual archaeology project, undertook by a team of scholars of the IBAM-CNR and The Arcadia University — TCGS, aimed to the overall digital reconstruction of Ortigia, the core district of the Greek Syracuse, produced a 3D documentary “Siracusa 3D reborn”, that represents a pivotal advance in the knowledge of the Greek background of the city. In this perspective, the choice of providing “passive” cognitive tools embedded with communicational and emotional components did not affect the scientific accuracy with which the reconstructive process has been carried out. Main monuments of Ortigia are described and analyzed in the context of a full 3D stereoscopic representation employing techniques of modern cinema industry for elucidating and explaining its historical and archaeological characteristics. The reconstructive workflow followed a meticulous methodological plan based on the published data and aimed to define a previously unavailable topographic profile of the city, portrayed in two main chronological phases, Archaic and Late Classical.”
You can find some information and pictures of the prominent temple of Apollo here.
Today, the temple looks like this