Hippana was an ancient town of Sicily, mentioned by Polybius as being taken by assault by the Romans in the First Punic War, 260 BCE. Diodorus, in relating the events of the same campaign, mentions the capture of a town called 'Sittana', for which we should in all probability read 'Hippana'. It sat astride the main road from Panormus (modern Palermo) to Agrigentum (modern Agrigento) upon Monte dei Cavalli.
Some manuscripts of Pliny mention the name of Ipanenses in his list of Sicilian towns, where the older editions have Ichanenses. If this reading be adopted, it in all probability refers to the same place as the Hippana of Polybius; but as the reading Ichanenses is also supported by the authority of Stephanus (who notices Ichana as a town of Sicily), the point must be considered doubtful.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.