There are three major religions in Turkey; Islam, Christianity and Judaism for centuries. About most of people in Turkey are Muslim, and the history of Turkey is mostly that followed by Islamic people, their empires, architecture, arts and literature.
Istanbul is supposed to be the celebrated bench of the Ecumenical Orthodox Patriarchate and there are a number of operational alive Orthodox Christian churches in Istanbul. There are a few Roman Catholic churches and few groups of Protestants.
The Assyrian Orthodox church, headed by a ancestor citizen in Damascus, Syria, has some alive churches and monasteries in southeastern Turkey abreast Mardin.
Turkey's Jewish association has its roots in the historical times when Anatolia was the Roman part of Asia (Minor). St Paul took birth in a Jewish family in Tarsus situated on Turkey's eastern Mediterranean coast. But a lot of Turkish Jews has their antecedents to the arrival of Sephardim from Spain and Portugal in the later part of the 15th century. Driven out of their homelands by the Spanish Inquisition, they begin ambush and abundance in the Ottoman Empire.
Every religious community was independent and can was free to apply its own religious rules under the Ottoman Empire. Chief Rabbi, the head of all the communities was answerable to the sultan for the acceptable behavior of all the communities.
The government supervises all the religious activities, as Turkey is a secular state. Citizens can worship as they wish, but proselytization is not permitted.
Chief Mufti, the Chief Rabbi and the Ecumenical Orthodox Patriarchs – heads of the major communities are also government employees. The government also administers Pious endowments (vakf, wakf) and all other religious property.
Wearing religious apparel is acceptable in worship places but it is banned in public areas.