Historic buildings are remarkable monuments that carry cultural traces and heritage from the past to the present and from the present to the past in terms of historical sustainability. These assets worthy of preservation should be restored and strengthened under certain intervention criteria for the continuity of cultural accumulation. Although historical masonry buildings exhibit a very rigid performance under vertical loads, their tensile strength against lateral loads such as seismic forces created by earthquakes is low. Domes, an important architectural element of masonry buildings, are likely to be damaged under the influence of seismic forces. The retrofitting analyses were performed with CFRP and GFRP in the dome tensile zones and readings were made on the Modulus of Elasticity. Since Edirnekapı Mihrimah Sultan Mosque is a structure sensitive to seismic force due to its location and the earthquakes experienced by the structure, it was deemed suitable for finite element model analysis.