After that set up a center of Islam in Tbilisi. It should be noted that the Arab domination brought certain positive aspects, and introduced a more formal / modernized judicial system in Georgia. In 764, Tbilisi, is still under Arab control was conquered by the Khazars again. In 853 AD, the armies of the Arab leader Bugha Al-Turki invaded Tbilisi in order to establish a Caliphate. The Arab domination of Tbilisi continued until about 1050 AD. In 1068, the city was again captured, only this time the Turks Selzhuk (Seljuk).
In 1122, after heavy fighting Selzhuks (Seljuks), which was involved in at least 60 000 Georgians and 300 000 Turks, the troops of King David the Builder entered Tbilisi. After the end of the battle for Tbilisi, David moved his residence from Kutaisi (Western Georgia) to Tbilisi, the thus giving the status of the capital city of united Georgian state. Now Georgia has become the dominant regional power with a thriving economy (with well-developed trade and skilled workers) and social system. By the end of the 12th century the population of Tbilisi had reached 80,000. The city also became an important literary and cultural center not only for Georgia but for most of the civilized world. During the reign of Queen Tamara worked as a writer of genius Tbilisi Shota Rustaveli (legendary epic "The Knight in Panther's Skin"). This period is often referred to as' as the Golden Age of Georgia "or the Georgian Renaissance. 'Golden Age' Tbilisi lasted more than a century.