The Martin Luther Church, inaugurated in 1958, is also known as the "Bulwark Church" in Emden. It was built in place of the 1942 destroyed previous church from 1772. The destruction of the city of Emden in World War II is reminiscent of a large round window above the west portal, which shows a rising phoenix above the burning Emden.
http://www.emden-touristik.de/themen/kunst-kultur/kunst-und-kultur/poi/martin-luther-kirche.html?cHash=e10adaa23e