The Era of Sultan Abdulhamid II is an era in which the power of the government was expressed indirectly to the public via various symbols. Besides the instruments like ceremonies, decorations, albums and clothes, the architecture has become one of the most important symbols of the Era of Power of Abdulhamid II. Many multi- functional buildings have been built in Anatolia with a classical style representing the "strong empires" conquered from the west. In addition to these buildings in which the centralism was expressed and which were established for the needs of "modern monarchy", traditional buildings such as mosque, madrasah, fountain were continued to be built with the same understanding. Especially for the mosque architecture, the traditional architectural principles and ornament features of the Ottoman have been collated with the styles of the West and considerably different, hybrid architecture has been gained. Carsi and Hara Mosques of Mahmudiye District of Eskisehir turn out to be the important buildings representing the general features of the era. In the scope of this research, the features as plan- location, mass- fecet, structure, technical material, decoration features of both mosques will be determined and the place and importance of them will be evaluated within the architectural characteristic of the era.