The mosque built in 1514 in the name of Gülbahar Hatun, the mother of Yavuz Sultan Selim, one of the sultans of the Ottoman Empire, is also known as Büyük İmaret or Hatuniye Camii. http://www.medyatrabzon.com/gulbahar-hatun-camii-ile-bize-ulasan-tarih-79299h.htm