The study sought to establish the functional and aesthetic value of the relationship between sculpture and architecture. The success of an architectural work is dependent on the integration of the architectural work and its sculptural value, which is primarily dependent on the designer's understanding of the role of sculpture in architectural work. Architecture has become a rostrum for the art of relief sculpture, whether on the outside or inside of architectural structures. As a result, relief sculpture contributed to the enrichment of architecture with aesthetic values that combined form and content. The subject of the study is determined by the scarcity of studies on developing the appearance of mosque ornamentation through the use of geometrical abstraction. The research aims to use geometrical abstraction to create designs for use in the decoration of internal and external mosques. The inventive designs were transformed from two-dimensional to sculptural designs three-dimensional  for use on the mosque. 23 designs were created using geometrical abstraction and converted into three-dimensional sculptural designs, and 10 designs were applied virtually on the inside and outside of the mosque using computer Programs . One of the most significant findings of the study is that geometrical abstraction can be used to create designs that suit all architectural formations used in architectural decorative inside and outside mosques.