The ancient city of Sestos is located on the northern shore of the Dardanelles. The city was settled by Aeolians c. 650 BC. The castle known as Akbaş Kalesi probably lies on the site of the city's acropolis and was a Byzantine-period fortification.
See:
- https://luwianstudies.org/site/sestos/
- https://www.academia.edu/34131357/_A%C3%A7%C4%B1ksaray_ve_%C3%87evresinde_Bizans_D%C3%B6nemi_Yerle%C5%9Fimleri_Y%C3%BCzey_Ara%C5%9Ft%C4%B1rmas%C4%B1_2013_32_Ara%C5%9Ft%C4%B1rma_Sonu%C3%A7lar%C4%B1_Toplant%C4%B1s%C4%B1_ed_Y_Ko%C5%9Far_2015_1_Cilt_535_552, p. 142.
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Andreas Külzer, TABULA IMPERII BYZANTINI 12: Ostthrakien (Eurōpē), Vienna, 2008: 646-648.