Dome, used as the upper structure of different architectural types since ancient times onwards, is also one of the primary covering elements of Turkish architecture. Dome architecture, which reached to its most monumental state with respect to dimension and structural system during the Classic Ottoman period, continued to show a variety during the Late Ottoman and Early Republic periods. These variations differ in accordance with region, district, and time. The domes of the mosques with wooden upper structure constructed with bagdadi technique, which is in fact a wall construction technique in general, are the reflections of this variety. Bagdadi dome is a dome type generally placed in the middle of the wooden roof. Bagdadi domes can be constructed with or without supports. Domes on supports are placed inside the purlin roof, while unsupported domes are placed within the trussed roof, in the middle of the wooden suspended ceiling. There exist single and multi-domed examples of domes constructed with this technique. This proves that, this dome type has not been used symbolically, but it has rather been a part of an evolution process. While dome has a remarkable importance concerning the spatial and architectural evolution in Turkish architecture, the bagdadi domes, which constitute the subject of this article, have not been explored as much as they deserve for their role within this evolution process. There are very few publications about the bagdadi domes. Whereas, only the general characteristics of these buildings are mentioned in these publications. The bagdadi domes, which can be considered as a reflection of local evolution, should find its place within the Turkish architecture. The bagdadi domed mosques, examples of which can be observed in a great part of Anatolia, are extensively seen in the provinces of Giresun, Trabzon, Rize, and Artvin. Although the examples of different provinces reveal similarities as well as differences with each other, the most authentic examples exist within the provinces of Giresun and Trabzon. In this study, the bagdadi domed mosques located in the province of Giresun, in Black sea Region, are studied. The bagdadi domed mosques, as the subject of this study, reveal the contributions and impacts of the geography of the region, local construction material as well as the local constructors to the local architecture.