Halabiye site is located on Euphrates at 100 km distance from Raqqa, or 65 km from Der-Ezzor. It is built back in the times of Palmyra kingdom, when Zenobia made it a defensive structure. Romans came after it, and Diocletian rebuilt it.
Byzantine emperor Justinian also took control of the site, and prepared it for fighting Persian empire.
Then came Sassanids and fortified it again in 610. Later after 15 years Arabs occupied it and because it was no more a frontier, it was neglected.
The complex site consists of towers, tombs, baths, 2 basilicas and a forum. The walls of the city are preserved well.