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Photo: The original uploader was Hovalp at English Wikipedia., CC BY-SA 2.0 via Wikimedia Commons
Impressive castle next to the Euphrates river. The current building was constructed during the 12the century. However the site has been active since at least 7th century CE.
Qal'at Najm is a castle located on the right bank of the Euphrates, near the town of Manbij in north Syria. The castle probably stood on the site of an earlier Roman site and is known from Arabic texts since the 7th century CE. Reconstruction works were carried out in the castle by Nur ad-Din Zangi and Az-Zahir Ghazi during the 12th and early 13th centuries. The castle sits on a mound that is protected by a glacis and houses a palace-bath complex and a mosque.