Qalaat al-Rasafeh (قلعة الرصافة) is a little known and seldom visited Ismaili castle located about seven kilometers into the mountains southwest of the town of Masyaf (مصياف). While largely in ruin, it is a picturesque site surrounded by forest and worth a stop if in the area. The castle was built in a semi-circular plan from local limestone and its current shape dates back to the end of the 10th century, though there may have been some fortifications here as far back as Roman times. During the Crusader period, the castle maintained communication between of Safita (صافيتا) and Masyaf (مصياف). The castle remained in use through the Ayyubid and Mamluk periods, but fell into neglect under the Ottomans.