The Gedächtniskirche der Protestation (English: The Memorial Church of the Protestation) is a United Protestant church of both Lutheran and Reformed confessions in Speyer, Rhineland-Palatinate, Germany that commemorates the Protestation at Speyer in defense of the evangelical faith, specifically Lutheranism. Built between 1893 and 1904, the church was constructed in memory of the protest that took place at the Diet of Speyer by the Protestant rulers of the Holy Roman Empire in 1529. The tower is the tallest bell tower in the whole Palatinate at 100 metres (330 ft).