File:Patara Harbour Bath in 1995 007.jpg

English: A website in Turkish about the excavations has, translated and condensed:

The Harbor Bath is located in the northeast of the city, on the southern skirt of Tepecik. Spaces that are lined up one after the other from east to west as frigidarium-tepidarium-caldarium, form the core of the building. The building has undergone changes in line with the new needs emerging over time and has been transformed with additions. For example, probably in the 3rd century AD, a place called the basilica thermarum (multi-purpose hall) was added to the east of the frigidarium.

The Harbor Bath has at least four major building phases. According to preliminary assessments, the main spaces (frigidarium, tepidarium and caldarium) must belong to the Early Imperial Period. The wall starting at the northeast corner of the frigidarium and continuing along the tepidarium and caldarium, crossing the west face and heading east again, leaning on the apse of the frigidarium, and the new spaces created with this wall and the streets surrounding the building must have been added at the end of the 1st century AD or the beginning of the 2nd century AD. In the middle of the 3rd century AD, the basilica thermarum with a marble floor and deep niches on the long sides was added to the east of the core structure. The use of the building as a bath ends at the end of the 4th or the beginning of the 5th century AD. After this date, it was used as a workshop until the first half of the 7th century AD, together with almost all of its spaces.