French Cathedral, Berlin
In 1785 Carl von Gontard modified the church and built - wall to wall next to it - the domed tower, which - together with the French-speaking congregants - earned the church its naming. The domed tower is technically no part of the church, there is no access between church and tower, because both buildings have different owners. The tower, similar to that of Deutscher Dom, was simply built to give the Gendarmenmarkt a symmetric design.