The Dome of the Chain is a free-standing dome east of the Dome of the Rock in the Old City of Jerusalem. Used as a prayer house, it was built by the Ummayads. It was turned into a chapel by the Crusaders but then restored by the Ayyubids as a Muslim prayer house. Since then it has been renovated by the Mamlukes, Ottomans and the Jerusalem Islamic Waqf.
Image: Planet Ware