Lala Pasha Mosque; The first mosque building in the Ottoman period in Erzurum was a model for other Ottoman mosques built here. The commander of Suleiman the Magnificent, the conqueror of Cyprus, Grand Vizier Lala Mustafa Pasha; During the period when he was the Beylerbeyi of Erzurum, he built the mosque in 1562. The work of Mimar Sinan, whose architecture belongs to Sinan, has a palace and a primary school. Lala Pasha Mosque; Şehzadebaşı, Sultan Ahmet, Eminönü The New Mosque and the new Fatih, such as the mosque in the type of plan applied, but they were built on a rather small scale. The central dome carried with four stakes in the middle, half-cross vaults supported by pointed arches on four sides and a central plan covered with four small domes at the corners, the interior of the mosque illuminates 28 windows in two rows. The tiles located on the lower pedestals of windows are damaged by bullets fired during the occupation of the city by the Russians. The inscription of the structure is located on the mihrab, which is round and muqarnas. The hadiths on the windows offer unique examples of calligraphy. The mosque minaret, which is built on a square base, has a round body and a single roof. The minaret built of white stone is decorated with red stone bracelets. In the courtyard of the mosque, eight-pointed wooden and a fountain with a conical roof are positioned. The columns in this area are adorned with extremely beautiful masonry. Above the western mihrabiye in the last congregation, there are edicts printed on the reverse 4. T an shaped marble slabs. This manuscript written in 1870 tells us that the 4 th Mehmed brought tax exemption. The last congregation, which is completely covered by a dome, has an architectural style that is open to the front and sides with pointed arches.