As per the reports, the castle collapsed during the quake, and some of the bastions in the east, south and southeast parts of the historical Gaziantep Castle were destroyed, with debris scattered on the road.
It further added that the eastern wall and the dome of the historical Şirvani Mosque, built in the 17th century, which is located next to the castle, also collapsed partially.
As per the archaeological excavations, the castle was initially built as a watchtower in the 2nd and 3rd centuries CE during the Roman period, and expanded over time.
The castle took its current form during the reign of Byzantine Emperor Justinian as per the Turkish Museums, and recently served as the Gaziantep Defense and Heroism Panoramic Museum.
Reportedly, there have been more than 18 recorded aftershocks measuring 4 or higher on the Richter scale since the initial tremor, which was also one of the strongest that hit Turkey in a century.
Thousands of people have lost their lives, while many more have suffered injuries throughout the affected areas of Turkey and Syria.
And as per Turkey's Vice President Fuat Oktay, around 1,700 buildings were damaged across 10 Turkish cities.