Sia Ancient City Sia Ancient City, located in ancient Pisidia, was most likely established in the 2nd century BC. Today, remains of houses and walls from the Hellenistic period can be seen, with some structures having roofs specifically designed to collect rainwater, which would then flow into cisterns at ground level. Despite its historical significance, Sia was largely forgotten over time due to its remote location. The lack of passable roads made travel and trade difficult, which meant that most buildings were left untouched and unmodified. The Via Sebaste, which was built and maintained during Roman times, disappeared completely from this part of Pisidia after the collapse of the Byzantine Empire, with only a small section over the Taurus remaining until the Maximianupolis customs station. Remnants of the Bouleuterion, three Roman temples, an agora with Doric stoa, and two basilicas from the Byzantine era have been preserved from the Roman era. Sia Ancient City's secluded location has helped to maintain these ruins, providing a unique glimpse into ancient Pisidian history.