St. Martin's Church, Biberach
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St. Martin's Church, Biberach is a church in Biberach an der Riß, in the Upper Swabia region of the German state (Land) of Baden-Württemberg. It is the oldest still active Simultaneum or shared church in Germany.[1] Its two congregations form part of the Roman Catholic Diocese of Rottenburg-Stuttgart and the Lutheran Evangelical Regional Church in Württemberg, respectively.