Solin is located 5 kilometers from the northeast of Split in Croatia. The town is situated close to the Jadro river estuary. The place is comprised of three distinct regions. These regions include the central part called Mitnica, Majdan, and Donja Strana. Mitnica lies at the intersection of the roads to Split, Trogir, and Klis. It is regarded as the residential and business section of Solin. Donja Strana is 1.5 kilometers away from Solin and it lies on the road to Trogir. This town is known for its cement factories and industrial plants. Madjan can be found in a small valley of the upper basin of the Jadro River. The main industrial activity in Madjan is cement production.
The ancient ruins of Salona can be found between Donja Strana and central Solin. Salona was a fortress and a harbor of the Illyrian Delmati. The area soon became a territory that was heavily influenced by the Greeks on the Adriatic. At that time, the town was given the rank of colony by Julius Caesar who was the governor of Illyricum. The town became the central province of Illyricum and later, the province of Dalmatia. Within a short space of time, the region developed into a cosmopolitan capital of the Adriatic. The most recognized period of its development came during the era of Diocletian. This was when the region was given the honorary accolade of Valeria. Valeria was the family name of the emperor himself. Between the period of the fourth and sixth centuries, Salona became one of the key centers of Christianity. As a result of numerous invasions and conflicts, it fell to the Avars and Slavs in the year 641.
Recently, archaeologists discovered the Illyrian core of the city. This was a portion of the city walls, which had a monumental gate called the Porta Caesarea. The towers had also been preserved from the initial Roman occupation. In the 11th century, the city was enclosed with new walls after the city’s rapid expansion into the East and West. The Forum was situated in the center of the city, which was close to the sea. Around the first century, a theater and a number of baths were constructed next to the Forum. Near the East of the later Bishop’s Basilica, a very well preserved complex of baths was found. Furthermore, in the eastern part of the city, one can also find the sumptuous Villa Urbana, which was famous for its artistic mosaics. These mosaics regularly featured images of Apollo Orpheus Triton. All these works of art are now kept in the Split Archaeological Museum.
In the 11th century, an amphitheater was constructed near the northwestern region of the city. The iconic city of Necropolis, which houses some of the most recognized sarcophagi in Solin, stood close to the Tragurium road. Moreover, during that period, Christian graveyards with basilicas became popular with the pagan necropolis. The Basilica of the Ve Martyrs, located next to Kapljuc near the city walls, is the oldest basilica. The basilica located on Manastirine is the most complex of the basilicas. Moreover, the early Christian Necropolis has the most unique and interesting architectural design.
The ancient city of Solin flourished adjacent to the Jadro River. The churches erected by the early medieval Croatian rulers have been explored very closely: St Mary's and St Stephen's churches, the royal mausoleums alongside today's church of Our Lady of the Isle, where the table containing Queen Jelena’s epitaph was discovered. Many of the archaeological finds are now kept and displayed in the Museum of Croatian Archeological Monuments and in the Archaeological Museum of Split