Sulusaray or Çiftlik, in Antiquity and the early Middle Ages known as Sebastopolis (Greek: Σεβαστούπολις) or Heracleopolis (Ἡρακλειούπολις), is a town in Tokat Province in the Black Sea region of Turkey.

[3] The date of foundation of this ancient city is still unknown, findings from the site indicate that Sebastopolis has been continuously inhabited from 3,000 BCE to the present day[4].

Some sources say that it was first established in the first century during the reign of Roman emperor Trajan, and that the city was separated from the districts of Pontus Galaticus/Polemoniacus and was included in the province of Cappadocia.

p. 703) Architectural pieces recovered during the diggings organized by the Directorate of the Tokat Museum in 1987 showed that the city was an important settlement during the Hellenistic, Roman and Byzantine periods.

The baths are situated at the eastern part of the Sebastopolis, where the water needed was recovered from the thermal spring located about 3 kilometers to the southwest.