Brest, Belarus
In 1596 the Brest Union was concluded at the church cathedral in Brest. On October 16-20 (6-10 according to the old calendar), a church council of the Kyivan metropolis was convened in Brest on October 16-20 (6-10) according to the instructions of Pope Clement VIII for the official proclamation of the union with the Roman Church. At this Council in the Cathedral Church of St. Nicholas on October 18 (8), 1596, most of the hierarchs of the Kyiv metropolis accepted the union.