The Dedaghvtisa church of Tirdznisi is a hall church (9.3 × 5.9 m) built of cobblestone and brick; the corners, window surrounds and three-stepped cornice are of brick. The cornice and roof are damaged. The entrance is in the center of the west wall. On the axis of the semicircular apse is a wide window flanked by arched niches. There are two windows each in the north and south walls, arched inside and pointed-arched with tympana outside. On the hall's long walls are two pairs of pilasters carrying the transverse arches of the cylindrical vault. Below the west facade window is a recessed cross with a rectangular niche beneath it; three similar crosses are arranged symmetrically on the south facade as well. The gabled roof is covered with fluted tile.