Topkapi Palace Museum is Istanbul's most important landmark and Turkey's most visited museum. It includes four courtyards containing the Church of St. Irene, palace kitchens, a harem, an audience hall, a treasury of three halls, a collection of sacred relics, a throne room, a library, a tulip garden and other buildings and objects. A collection of clothes of the sultans, a world-famous collection of the sultan's weapons, a rare collection of porcelain, watches, unique jewelry, Christian shrines - for example, the hand of St. John the Baptist - are kept here. The museum's exhibition includes about 65 thousand exhibits. This is only a small part on display.Cover: Interior of the circumcision hall.