journalist Tim Kelsey described the joint Muslim and Christian gathering that used to take place here on one day of the year when sheep and cockerels were sacrificed in hope of a miracle that would heal a disabled member of the community, an event that no longer occurs. The Ferruh Kethüda Mosque is a minor work of Mimar Sinan (1562) which contains examples of Tekfur Sarayı tiles around its mihrab. The Balat religious court used to convene in its grounds. The wrecked Sea Walls of Constantinople cut Balat off from the Golden Horn. On the seaward side a plaque memorialises the point in the walls when Sultan Mehmet II's troops poured over the walls on 23 April 1453 during the battle that culminated in the Conquest of Istanbul. There are several other rarely used Greek Orthodox churches in Balat including the Church of Hagios Ioannis Prodromos (St John the Baptist) which was closely linked to the St Catherine's Monastery in the Sinai Desert in Egypt. See also Ahrida Synagogue of Istanbul Yanbol Synagogue Karataş, Izmir Bulgarian St. Stephen Church References Jews and Judaism in Istanbul Jewish ghettos in Europe Jewish communities in Turkey Neighbourhoods of Fatih