The name comes from the abundant hyacinths around the church. Sumbullu Kilise has a domed single nave and was part of a two-storied monastery, the upper floor being living quarters. The arched doorways which are divided by pillars and linked with an architrave in the facade of the church carry the traces of Persian influence.
Central dome; Christ pantocrator. North wall; (next to the altar) St. George and St. Theodore. West wall; (in the niche) Constantine and Helena. Altar section; Gabriel and Michael. On the following wall Annunciation is depicted.