Protestants – non-Catholics in general, actually – had a pretty hard time in Mainz.
Napoleon Bonaparte was the first to lift them from their status (shared with Jews) as “tolerated human beings” [sic] shortly after Mainz’s loss of its archdiocese status in 1802 and relegation to a mere diocese within the territory of France.
The congregation increased from a few hundred in 1802 to a third of the population at the time of its consecration in 1903.
Destroyed by bombing raids during the second world war, it was rebuilt between 1952 and 1954 and dominates the Kaiserstarasse and cityscape of the Neustadt.
As it was designed to do by Eduard Kreyßig, the master builder of Mainz….
Mainz Daily Photo 
It’s a beautiful church.
Beautiful sky. Bombing raids. . .awful period of history; glad it is over, at least in this part of the world. Refugee problem is enormous and seems unsolvable at this point.