Interior of the St. John's Archcathedral in Warsaw which is a Roman Catholic church in Warsaw's Old Town, Poland. 890-Edit-2a

St. John's Archcathedral in Warsaw is a Roman Catholic church in Warsaw's Old Town. St. John's is one of three cathedrals in Warsaw, but the only one which is also an archcathedral. It is the mother church of the archdiocese of Warsaw. Wikipedia

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