The oldest one in the complex is the first temple which was discovered on the lower layer of the ancient residential area in Mingachevir.

These ledges played the role of a seat for worshipers and are typical especially for some Orthodox cathedrals and patriarchal churches.

This temple also draws attention to the decorative stones which confirm the architectural and artistic character of the building.

Unlike early Roman basics with Atrium, more indoor galleries are typical for South Caucasus architecture.

The open-air gallery of the 4th temple included in the Mingachevir church complex is an example of such atriums in the region.

[4][5] In Mingachevir, during the excavations of the 6th century, many examples of engraving on the stone were preserved in the columns` remains, holes, and borders of the windows, and the decorative elements of the walls.

Such extensive use of carving art in the temple building presence of various shapes and wall decoration - curls, khans and paintings once again proves its rich design.

Findings from that period show that such monuments were used in ancient Armenian ornamental motifs such as hexagonal rugs, sun, cross, winding, and bell-shaped lines.

The scenes comply with the bronze seals and ring depictions kept in the Azerbaijan History Museum in Baku for their plasticity, descriptive motifs, and compositional features.