Tauridian Chersonesos / Khersones Tavriyskyi

Chersonesos Taurida (Ukrainian Херсоне́с Таврі́йський; formerly Russian. Korsuń; Greek. Χερσόνησος, Trb. Chersonesos) - ancient Greek city in Crimea - Miletus colony, also the ancient name of the entire Crimean Peninsula. The place where he was baptized in 988 by Vladimir the Great, the Ruthenian prince, i.e. the symbolic baptism of Russia. The ruins of the city are now within the administrative boundaries of Sevastopol.
The ruins of Chersonesos are open to the public as a large reserve - an archaeological museum. One of the leading initiators of the Chersonesos research and the founder of the museum was the Polish archaeologist Karol Kościuszko-Waluszyński.
In 2013, the site was entered on the UNESCO World Heritage List.
Founded by the Greek colonists of Miletus in 528 BC during the great colonization. Initially, it had a standard system of democratic governance of the city by elected officials. The basis of the economy was agriculture based on the surrounding fields. At the turn of the 5th / 4th century BCE the first defensive walls around the then city were built. At that time, Chersonesos turned from a city-state into the capital of a fairly large state, covering a large part of the western Crimea. From the middle of the 4th century BC the city developed rapidly and in the 3rd century BC it has reached its maximum size, visible in the course of the walls that have survived to this day. In the 2nd century BC the threat from the Scythians, who took over most of Crimea, forced Chersonesos to ask for help, addressed to the ruler of Pontus, King Mithridates. This led to the disintegration of the Scythians, but Chersonesos became part of the Pontic state, although it retained internal autonomy and self-government.
pl.wikipedia.org/wiki/Chersonez_Taurydzki