The Archdiocese of Mainz is a prominent Roman Catholic archdiocese located in Germany. It is part of the ecclesiastical province of Mainz and serves as the seat of the Archbishop of Mainz. The archdiocese has a rich history, dating back to its establishment in the 1st century, and plays a significant role in the Catholic Church in Germany. The archdiocese encompasses several regions, including the state of Rhineland-Palatinate and parts of Hesse. It is known for its historical churches, such as the Mainz Cathedral, and its involvement in various social and educational initiatives. The archdiocese also participates in ecumenical dialogue and interfaith cooperation.