The exterior wall of the church is covered with bricks and the interior wall is covered with plaster, which is painted and decorated. The church has two domes; the small dome is located on the public residence, and the large dome is built on the front of the church altar.

The dome of ancient Armenian churches is conical, but the dome of Vank Church is similar to the dome of Persian Safavid mosques. And it shows the combination of Armenian and Islamic architecture.

All the walls, arches, the dome neck, the interior of the dome and all the corners of the church are painted and decorated with oil paints. Most church murals have biblical themes and are depicted from the birth to the ascension of Jesus Christ. On part of the walls of the church, the Day of Judgment, the judgment of the Day of Judgment and heaven and hell can be seen.

This church is unique among Armenian churches in terms of gilding and beauty. This church is unique among Armenian churches in terms of gilding and beauty.

One of the most famous works in the Vank Church Museum is a hair belonging to an eighteen-year-old girl on which Vahram Hakopian wrote a passage from Torah in Armenian in 1974 in a diamond pen. On the hair with a microscope installed for this purpose.