Although only ruins remain to give the place importance, it was the first Doric temple in Sicily and with imagination and few columns left standing one can get an idea of its original splendor. To see ruins consists of a little bit of that and to see this temple, or what is left of it, you don´t have to go much from the center.
Along the outer belt of the island of Ortigia (Syracuse) you can see several bastions which once formed the defensive walls, protecting the city from the attack of the ransacking Spaniards. The renovated walls have become a real symbol of the island.
The Catacombs of Saint John are truly unique, and shouldn't be missed. Their construction dates all the way back to between 315 and 360 AD, when they were initially created to hold water, and then used as a cemetery. St Paul visited during his time as a preacher, and St Martin is buried here, his crypt still visible. The environment is incredible ... unmissable!
I recommend that you visit these baths in the historic centre of Ortigia. The site shows the existence of the Jewish community in Syracuse, one of the oldest and most important in the Mediterranean. The practice of immersion allowed people to be reborn with a new life. The baths are located inside the Allla Guidecca Hotel. Worth visiting!
One of the most striking and well known places of the Neapolis Archaeological Park is an artificial grotto shaped like an ear that's known as Orecchio di Dionisio. The cave is in the amazing area of the Gardens of Neapolis, with all kinds of plants and trees. The cave itself is impressive, both from the exterior and interior. On the outside, you can see the incredibly large opening in the rock, while inside there is a huge cavity that's 65 meters deep and 23 meters tall. I recommend bringing a flashlight because there's less light the further into the cave you go, and the last part can be difficult without a flashlight. The significance of this cave, according to Caravaggio, is that it was built to eavesdrop on prisoners. It's a plausible explanation because when you get inside, you realize you can hear all the sounds in the surroundings, it's amazing. Anyway, it's likely that this cave was excavated as a quarry and then used as a sound screen in theatre performances.