Iznik pottery
The ceramic collection of the Topkapi Palace includes over ten thousand pieces of Chinese porcelain but almost no Iznik pottery. Most of the surviving Iznik vessels are in museums outside Turkey, but examples of the city's tile production exist in numerous cities throughout Turkey, such as İstanbul, Bursa, Edirne and Adana. In Istanbul examples of Iznik tiling can be seen in mosques, tombs, libraries, and palace buildings, such as the Rüstem Pasha Mosque, the Sokollu Mehmet Pasha Mosque, the tomb of Selim II in the Hagia Sophia complex, and certain buildings of the Topkapı Palace complex such as the Circumcision room and the Baghdad Kiosk.
Topkapı Palace
It houses what are considered to be "the most sacred relics of the Muslim world": the cloak of Muhammad, two swords, a bow, one tooth, a hair of his beard, his battle sabres, an autographed letter and other relics which are known as the Sacred Trusts. Several other sacred objects are on display, such as the swords of the first four Caliphs, The Staff of Moses, the turban of Joseph and a carpet of the daughter of Mohammed. Even the Sultan and his family were permitted entrance only once a year, on the 15th day of Ramadan, during the time when the palace was a residence. Now any visitor can see these items, although in very dim light to protect the relics, and many Muslims make a pilgrimage for this purpose.