The Chora or Kariye Mosque is a medieval Greek Orthodox church building, mostly used as a mosque since the 16th century, in the Edirnekapı neighborhood of Fatih district, Istanbul, Turkey. It is mainly famous for its outstanding Late Byzantine mosaics and frescos.

Fatih is a municipality and district of Istanbul Province, Turkey. Its area is 15 km2, and its population is 368,227 (2022). It is home to almost all of the provincial authorities but not the courthouse. It encompasses the historical peninsula, coinciding with old Constantinople. In 2009, the district of Eminönü, which had been a separate municipality located at the tip of the peninsula, was once again remerged into Fatih because of its small population. Fatih is bordered by the Golden Horn to the north and the Sea of Marmara to the south, while the Western border is demarked by the Theodosian wall and the east by the Bosphorus Strait.