Roman Catholic Diocese of Siedlce, Catholic diocese in Mazovian Voivodeship, Poland.
The Diocese of Siedlce is a Catholic administrative region covering much of eastern Poland's Mazovian Voivodeship. It serves hundreds of thousands of residents through numerous parishes and religious communities scattered across the territory.
The diocese was originally founded in 1818 under the name Diocese of Podlachia. It received its current name and structure in 1925 as part of a major reorganization of Catholic administration in the region.
The Cathedral of the Immaculate Conception of the Blessed Virgin Mary in the city center is where local Catholics gather for major celebrations and religious observances throughout the year.
The diocese is an administrative religious unit without visitor facilities or scheduled tours. Access to religious services follows the calendar of individual parishes, which you can find by visiting local churches or diocesan offices.
A distinctive aspect is the veneration of Saints Simon and Jude Thaddeus, whose feast day on October 28 holds special meaning in the local religious calendar. This observance connects the present community to ancient Christian traditions celebrated in this region.
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