The Achi monastery is a single-nave hall church, built of hewn stone. Constructed at the end of the 13th century or in the early 14th, it was later reroofed, renovated and surrounded by a defensive wall. The whole interior is frescoed. Some murals, stylistically dated to the late 13th century and betraying affinities with the Palaeologan art, are iconographic rarities, such as those depicting the life of Saint George. One of the accompanying inscriptions, in Greek, mentions Onesimos, a Trapezuntine, probably a painter. A Georgian inscription in the asomtavruli script, mounted on the eastern façade, reads: "Saint George, intercede for the lords Saghir, Rati, and Ushanian, and intercede for Nikoloz of Achi and the stonemasons Mikel and Mkhetsidze."[1][2]
The Achi monastery was favored by the Princes of Guria, especially Simon I Gurieli and Kaikhosro I Gurieli in the 17th century. Both made significant donations to the church and Kaikhosro made it a metochion of the bishopric see of Shemokmedi. The abbotship of Achi was then hereditary in the Salukvadze-Taqaishvili family. The church housed a gilded silver cross with a Georgian inscription mentioning the queen Tamar, which was discovered by Ekvtime Taqaishvili.[1] The item was preserved in the Salukvadze family during the Soviet period and returned to the Achi church in 2015.[3]
The Achi church was restored to Christian use in 1991.[1] It is inscribed on the registry of the Monuments of National Significance of Georgia.
