While its first residents are unknown, the city's history dates back to 3,000 BC.
The earliest known artifacts of the castle date back to the 5th century, and its first recorded residents were Christian groups migrating from Comana Pontica.
Because it was used as a prison for rebels and government administrators at times, it was also called Çardar-ı Bedevi, meaning the Wild Arbor.
Vlad the Impaler (Dracula) was one of its inmates early in the 15th century when was he was imprisoned here for a short period by the Ottoman sultan Murad II.
[2][3] The castle is being restored and its secret passage is open to visitors.