A solemn Eucharistic celebration and the dedication of the Chapel of the Most Holy Trinity, belonging to the Apostolic Vicariate of Istanbul, took place on Friday, 6 November 2026, in İznik, Türkiye, the ancient city of Nicaea, one of the most significant places in the history of Christianity. The Holy Mass was presided over by His Excellency Archbishop Salvatore (Rino) Fisichella, Pro-Prefect of the Section for Fundamental Questions regarding Evangelization in the World of the Dicastery for Evangelization of the Holy See.