Seyifler Castle

Seyifler Kalesi is a historical defensive structure located at the southern entrance of Seyifler Village, north of the Ferizli district in Sakarya Province. The fortress is situated 30 kilometers from the city center of Sakarya, at a strategic point where the Sakarya River and Çark Su converge.

Seyifler Kalesi(T.C Ferizli District Governorship)

History

Constructed during the Byzantine period, the primary purpose of the structure was to secure passage along the Black Sea–Adapazarı route. It is noted that the fortress was positioned to dominate both the Sakarya River and Çark Su, likely to protect bridges believed to have spanned these waterways at the time.

Seyifler Kalesi is considered part of a defensive line that includes other fortifications in the region. Alongside structures such as Harmantepe, Adliye, Çobankale and Paşalar Kalesi, which are aligned along the Sakarya River, it functioned as a border guard and control tower.

Architectural Features and Current Condition

Seyifler Kalesi, measuring approximately 80 by 80 meters, is classified as a small-scale fortress. Today, the structure exists in ruins; however, two semicircular towers on its western and northern sections remain intact.

Access

The fortress can be reached by local transportation at the entrance to Seyifler Village in the Ferizli district.