From the outset, the Edict of Potsdam guaranteed the Huguenots in Brandenburg-Prussia freedom of religious worship. The elector also paid for a preacher for the Huguenots in every city and ordered that the Huguenots be allowed to use the churches of the (German) Reformed church in tandem with the German congregation. At the beginning of the 18th century, the Huguenot community in Berlin built its own church – the Französische Friedrichstadtkirche on the Gendarmenmarkt. At the end of the 18th century, a great tower was added, which became known as the "Französischer Dom" (French Dome/Cathedral, the term Dom has both meanings in German) due to its impressive cupola. Today, this term is usually used to refer to the entire building complex.
The Französische Friedrichstadtkirche in Berlin, black-and-white photograph, September 1995, photographer: Peter Heinz Junge; source: Deutsches Bundesarchiv (German Federal Archive), Bild 183-1985-0913-305, Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Bundesarchiv_Bild_183-1985-0913-305,_Berlin,_Franz%C3%B6sische_Friedrichstadtkirche.jpg.