 In the 1550s and early 1560s the potters in Iznik made tiles for the Süleymaniye Mosque in Istanbul, the mausoleum of Hurrem Sultan (Roxelana) (completed in 1558), the Great Mosque in Adana (in around 1560), the Rüstem Pasha Mosque in Istanbul (completed in around 1563), and the mausoleum of Süleyman I (completed in 1567).The mausoleums of Süleyman I and that of his wife Hurrem Sultan are both located in the grounds of the Süleymaniye Mosque in Istanbul.Associated with this switch to tile production were important changes in the aesthetics.