Muslim supremacists seem to have fantasies -- as well as a long history -- of converting Christian sites to Islamic ones. Take, for example, Saint-Denis, the Gothic cathedral named for the first Christian bishop of Paris who was buried there in 250, and the burial place of Charles Martel, whose victory stopped the Muslim invasion of France in 732. Now, according to the scholar Gilles Kepel, this burial place of most of France's kings and queens is "the Mecca in Islam of France". The French Islamists are dreaming of taking it over and replacing the church bells with the call of the muezzin.
In Turkey's greatest cathedral, Hagia Sophia, a muezzin's call recently reverberated inside the sixth-century church for the first time in 85 years.