According to the legend the monastery was built on the place where Muslim invaders executed David and Konstantin Mkheidze, the Georgian princes of Argveti who refused to convert to Islam. In a small monastery hall, there is a rectangular ark with the hollows of the princes canonized by Georgian Church. There is an ancient superstition associated with the Motsameta Monastery: if one crawls three times under the ark and makes a wish while touching the hollows, it will be fulfilled by the martyr princes. The church was reconstructed in the 10th century by the King Bagrat III. The building was reconstructed again in the 19th century.