The Church of St. Savior in Chora (als known as the the Chora Church or Chora Museum) is considered to be one of the most beautiful examples of a Byzantine church. The church is situated in the western, Edirnekapi district of Istanbul. In the 16th century, the church was converted into a mosque by the Ottoman rulers, and it became a secularised museum in 1948. The interior of the building is covered with fine mosaics and frescoes.