Zvartnots Cathedral (Armenian: Զուարթնոց (classical); Զվարթնոց (reformed), sometimes rendered in scholarly works as Zuart'nots' or Zuart'noc' ; lit.

[3] Zvartnots stood for 320 years before collapsing in the tenth century; by the time the eleventh-century historian Stepanos Taronetsi mentioned the church in his Universal History the cathedral was already in ruins.

A close copy of the cathedral was erected at Ani, designed by Trdat the Architect, during the reign of Gagik I Bagratuni in the final decade of the tenth century.

Stepanos Taronetsi referred to Zvartnots when describing the church that Gagik I had inaugurated as "a large structure at Vałaršapat [Vagharshapat], dedicated to the same saint that had fallen into ruins.

The site was excavated between 1901 and 1907 under the direction of Khachik vardapet Dadian uncovered the foundations of the cathedral as well as the remains of the catholicosal palace and a winery.

The interior of the mosaic-decorated church was built in the shape of a Greek cross (tetraconch), with an aisle encircling this area, while the exterior was a 32-sided polygon which appeared circular from a distance.