Uplistsikhe is a cave and fortress town in Georgia on the Kura River. 
It was founded in the 6th century B.C. and over time developed into an important trading centre on the Silk Road.
The buildings were dug directly into the soft sandstone. The only brick building is a Christian basilica from the 10th century AD.
For a long time the city was considered impregnable. Finally in the 13th century the Mongols succeeded in taking the city and destroyed it. Nevertheless, it remained inhabited until the 15th century.
In 1993 Uplistsikhe was registered for the UNESCO World Heritage List. Since 2004, extensive renovation work has been carried out.