Gazi Hajdar Kadi Mosque is a mosque in the center of the city of Bitola built by the kadi Gazi Hajdar in 1565 (969 according to Hijra), opposite the then "Ovchi Pazar" and "Deboj Cifte Amamot".
It is a masterpiece of the classical Ottoman style present in Bitola and shows the simplicity of the proportions characteristic of the classical tendencies of Ottoman architecture in the 16th century. The building has a square base and a large dome 20 meters high. The temple has a large square prayer space, covered with a dome. The walls consist of two rows of bricks and one row of carved stone, which are alternately changed, which is very similar to the masonry technique of the Sinan School.
Similarities can be found with the Sinan Pasha Mosque in Besiktas and the Kara Ahmed Pasha Kiliyye in Topkapi in Istanbul from 1550 to 1560.
The rich ornamentation is made with stucco technique, especially mihrab, which is preserved in the original. Painting as a style, belongs to the XIX century and is similar to the decoration used in Anatolia.
Mihrab and trumpets are sculpted, and the doors are made of walnut and decorated with rosettes. The porch is supported by four imposing pillars with marble capitals rich in stalactite decorations. Due to the existence of the two minarets as well as the 1: 2 ratio that accentuates the height of the dome, this mosque is considered by many to be the most proportionate mosque in the Balkans.