Attalia is referenced only once in the Acts narrative: when Paul and Barnabas are returning to Syrian Antioch, retracing their steps from Derbe. It is possible, however, that this was also their 'port of entry' when travelling from Cyprus to Perga (Acts 13:13).
The modern city of Antalya preserves a form of the name Attalia. I visited Attalia as part of a personal journey covering first missionary journey sites in 2012.
The old city surrounds the old harbour but there are few Roman remains that I am aware of.
Click here for a Google Earth view of the old harbour of Attalia.
A very picturesque marina now occupies the location of the 1st C harbour.
Below left: The modern version of the ancient harbour of Attalia, viewed from the south. Photo: 19 June 2012
A 2nd C AD Roman Tower stands on the elevated foreshore just to the south of the harbour.
Above right: 2nd C AD Roman tower south of the ancient harbour. Photo: 19 June 2012
A memorial gateway, honouring the emperor Hadrian's visit to the city (130 AD), gives some indication of the positioning of the walls of the old city.
I didn't visit this spot... something for a return visit?!