Adherence to the canon in church decoration preserves a living connection with our spiritual tradition. With the adoption of Christianity from Byzantium in 864, a comprehensive and strictly defined system for the decoration and painting of churches, known as the “Byzantine canon,” was introduced in Bulgaria. This system transforms the interior of the church into a miniature model of the universe, where every image and scene has a precisely defined place. Windows hold significant symbolic meaning within this canon; they are the source of the living, dynamic light that brings the murals and mosaics to life. Here, too, the technique of fused glass—with its unique characteristics and the absence of metal joints (lead or copper) between the individual elements—allows for the creation of compositions featuring Christian symbolism through which light passes evenly.