Castle
Heptapyrgion (Yedi Kule)
The fortress at the highest point of the city wall is the Citadel of the Acropolis. The northern towers probably date from the late 4th or 5th century, the southern five towers from the 12th century; in 1431, the Ottomans renewed the complex. From the 1890s, it served as a prison, only being relocated in 1989. Since 1990, the fortress has been researched and restored by the Ministry of Culture.





