Tyra is an ancient Greek city on the banks of the estuary at the mouth of the Tiras River (the ancient name of the Dniester), where the city of Belgorod-Dnestrovsky is now located. The ruins of Thira are located near the walls of the Akkerman Fortress, from the observation deck in front of which they are convenient to inspect, and near the surrounding streets. The city of Thira was founded in the 6th century. BC. settlers from the Greek Miletus and reached its peak in the III century. BC. The main occupations of its inhabitants were agriculture and viticulture, crafts, fishing and trade. The city even minted its own silver coin. From the beginning of the 2nd century AD. Thira was part of the Roman Empire, during the collapse of which, in the second half of the 3rd century, the city was destroyed by the Goths. Later, a Slavic settlement arose on this site, then a fortress was built.
Archaeological excavations in the proposed territory of Tyra have been ongoing since 1900 to the present day, but they are difficult due to the destruction or inaccessibility of the early cultural layer, most of which lies under the fortress.