Dome house of Tajolmolk is one of the prettiest and most unique brick dome houses of the world which is located in the northern side of Isfahan’s Great Mosque. The space inside of this dome house is rich in pretty brick and gypsum ornaments which have turned it into a unique treasure in the art of ornaments of mosques and due to these ornamentations it has a rare prettiness. Diversity and multiplicity of ornaments are indicative of intelligence and creativity of the artist architect who has applied all his efforts to make such a spiritual place. Besides creating prettiness and giving religious aspect; friezes cause blessing of the space and expand the moral and spiritual sensation to the place too. They also indicate historical and social condition of that era. The current research turns to introduce ornaments of this valuable treasure, application of these ornaments and an aesthetical perception of them by reliance on existing resources and observance of the dome house space. The methodology of this research is by descriptive analytical method and the data were gathered by library and field study.