εἰκονοστάσιον

Eikonostásion is built from Greek eikōn (image) and stásis (standing, a place to stand). The compound means 'a place where images stand.' In Orthodox Christian architecture, the iconostasis is the screen — originally a low barrier, eventually a towering wall — that separates the nave (where the congregation stands) from the sanctuary (where the Eucharist is celebrated). The screen is covered with icons arranged in a specific theological order. The iconostasis is simultaneously a barrier and a window: it hides the altar while showing the faces of Christ, the Virgin, the saints.

The iconostasis evolved over centuries. Early Christian churches had low chancel barriers — stone or marble screens waist-high, sometimes with columns. Icons were placed on or near these barriers by the sixth century. In Russia, beginning in the fourteenth century, the iconostasis grew taller and more elaborate. Theophanes the Greek and Andrei Rublev painted icons for the Cathedral of the Annunciation in Moscow around 1405, contributing to an iconostasis of five tiers. By the seventeenth century, Russian iconostases could reach the ceiling.

The theological logic of the iconostasis is that it reveals by concealing. The congregation cannot see the altar directly. Instead, they see the icons — which are theology in visual form. The arrangement follows a fixed pattern: Christ and the Virgin flanking the central doors, the local patron saint, the apostles, the church feasts, the prophets, the patriarchs. Reading the iconostasis from bottom to top is reading the history of salvation from the present backward to creation.

The central opening in the iconostasis — the Royal Doors or Holy Doors — is opened at specific moments during the Divine Liturgy, and only the ordained clergy pass through. The moment the doors open and the congregation glimpses the altar is liturgically charged. The barrier exists to make the opening meaningful. The word for a standing-place of images names an architecture of controlled revelation.