Diocese of Łomża
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The Diocese of Łomża is a Latin Church diocese of the Catholic Church located in the city of Łomża in the ecclesiastical province of Białystok in Poland.
Cathedral of St. Michael the Archangel, Łomża
Theological seminary in Łomża
Diocese of Sejny
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The Diocese of Sejny, properly the Diocese of Sejny or rather Augustów, was a diocese of the Latin Church of the Roman Catholic Church with the seat of its bishops in Sejny, which existed from 1818 to
Basilica of the Visitation of the Blessed Virgin Mary in Sejny, former cathedral church of the diocese
Former episcopal palace (now the Museum of the Sejny Region)