The Kariye Museum is, after Hagia Sophia, the most important Byzantine monument in Istanbul, Turkey. After the Turkish conquest in 1453, the church remained as it is for a time, and was turned into a mosque in 1511 by addition of a minaret. Then it became a museum in 1948 and its frescoes and mosaics were cleaned. The majority of the current building was built in the late 11th century with lots of repairs and restructuring in the following centuries. It was dedicated to Christ the Savior. The interior of the building is covered with wonderful mosaics and frescoes, illustrating scenes from the life of Christ and the Virgin Mary.