The Co-Cathedral of the Assumption of the Blessed Virgin and St. Stanislaus [1] (Belarusian: Унебаўзяцця Найсвяцейшай Панны Марыі і св.

On December 25, 1772 Catherine II of Russia announced the establishment of a Catholic diocese of Byelorussia based in Mogilev.

Ten years later, the diocese was elevated as archdiocese of Mohilev with jurisdiction over all of Latin rite Catholic parishes in Russia, including Moscow and St. Petersburg.

In 1956 in the Soviet Union times the cathedral was closed and used to house the headquarters of the Belarusian part of the historical archives of the USSR.

In 1960, the file was transferred to Minsk and the old building of the cathedral was transformed into the State Archive of Mogilev region.