A In this article the role of geometry and its interaction with imagination in creating the unique architectural will be explained. From long time ago philosophers and prominents have referred to important role that imagination and geometry have in the creation of universe. All over the universe, the emergence of geometry at beginning of creation is undeniable. Geometry with its manifestation at physical and abstract realm, in order to make meanings inclu­sive; had helped both in matter promotion and its order and also in descent of mean­ing by presence of imagination (using the features of formulating at tangible and sensible world). Therefore, in this article, the authors intend to analyze the interac­tion between geometry and imagination in the creation of the unique architectural. The present article has a qualitative ap­proach and its main procedure is based on the “interpretive” paradigm. Also results of research indicates that geometry and existence of creative architect (in the state of best human) with implementing imagi­nation in creating the unique architectural have most important role which geometry in its half abstract realm along architect imagination tend to formulating of phan­tom from absent world and he with ap­preciation to geometric and mathematics science, construct and combination tech­niques in progression of matter promotion and meaning degradation move to create the unique architectural.