Zagan Pasha Mosque is a historic mosque in Balıkesir, northwest Turkey. It is known as the place, where Mustafa Kemal Atatürk delivered his famous "Balıkesir Khutbah" in 1923.
The mosque was built in 1461 by Zagan Pasha, an Ottoman military commander and Grand Vizier of Albanian origin; he was the son of the right hand of George Castriot Skanderbeg - Vrana Konti. Located in the city center, at Mustafa Fakıh neighborhood, it is part of a complex consisting of a tomb and a hammam. The mosque and the tomb, broke down in 1897, were rebuilt in 1908 by the Mutasarrıf Ömer Ali Bey.
It is the biggest mosque in Balıkesir. The square-plan mosque is constructed in ashlar masonry. It has one main dome surrounded by four side domes, which are separated by vaults.
Wikipedia https://en.wikipedia.org/wiki/Zagan_Pasha_Mosque
Coordinates 39°38'55.561" N 27°52'47.938" E