It was founded in the 5th century BC.
It was capital of the early Georgian Kingdom of Iberia from the 3rd century BC to the 5th century AD. It was a site of early Christian activity, and the location where Christianity was proclaimed the state religion of Georgia in 337. It remains the headquarters of the Georgian Orthodox Church.
“The Historical Monuments of Mtsketa contain archaeological remains of great significance that testify to the high culture in the art of building, masonry crafts, pottery, as well as metal casting and processing, and the social, political, and economic evolution of this mountain kingdom for some four millennia. They also represent associative values with religious figures, such as Saint Nino, whose deeds are documented by Georgian, Armenian, Greek and Roman historians, and the 6th-century church in Jvari Monastery remains the most sacred place in Georgia.” – unesco.org
Due to its historical significance the “Historical Monuments of Mtsketa” became a UNESCO World Heritage Site in 1994.