Narikala Fortress is an ancient fortress overlooking Tbilisi, the capital of Georgia. It was built in the 4th century AD as a Persian citadel. The fortress was considerably expanded by the Umayyads in the 7th century AD and later, by king David the Builder in the 12th century AD. Most of extant fortifications date from the 16th and 17th centuries AD. In 1827, parts of the fortress were damaged by an earthquake and demolished.