Assos Castle is a historic fortress located on the Assos peninsula in Turkey. Built in the 4th century BC, it was originally constructed by the Achaeans to protect the ancient city of Assos. The castle features impressive walls and towers, offering stunning views of the surrounding landscape and the Aegean Sea. The castle has undergone various renovations over the centuries, reflecting different architectural styles. Today, it serves as a popular tourist destination, attracting visitors interested in history and archaeology. The site is also near the ruins of the ancient Temple of Athena, adding to its cultural significance.