The brick Gothic cathedral church of St. Assumption of the Blessed Virgin Mary, known as the Latin Cathedral. The building faces east, completely plastered. Hall, three-nave layout. Annexes and chapels adjoin the body of the church. The northern tower, serving as a belfry, covered with a cupola made by Jan Niedźwiecki in 1766. Topped with a gilded cross by Karol Sievert in 1844. Three vestibules lead to the interior of the temple.