St. Martin's Church, Biberach

St. Martin's Church, Biberach is a church in Biberach an der Riß, in the Upper Swabia region of the German state of Baden-Württemberg. It is the oldest still active Simultaneum or shared church in Germany. Its two congregations form part of the Roman Catholic Diocese of Rottenburg-Stuttgart and the Lutheran Evangelical Regional Church in Württemberg, respectively.