The Ahmed Bey Mosque is one of the oldest mosques in Giannitsa and in Greece overall, built shortly before 1450 or during the second half of the fifteen century. The mosque took its name from one Ahmed Bey, the grandson of
Gazi Evrenos who founded the town of Giannitsa. In its early years, it was a great place for pilgrimage as the grave of
Sheikh Ilahi, a 15th-century scholar, was located there, along with the tomb of Gazi Evrenos himself. Following his death, Gazi Evrenos received honours similar to those of a saint, and the Muslim inhabitants of Giannitsa adorned his town with several monuments and institutions, such as tekkes, madrasas, and mosques. In the twentieth century, the mosque was given to the Greek Army to use, which in turn gave it up to the local municipality along with the military camp that rose around it. Access to the mosque is not easy due to the abundant vegetation around and on the building, and perhaps due to this it was only registered as a monument in 1990. == Architecture ==