The oldest existing church in Bytom, built even before 1254, that is before Bytom received its town charter -- most probably
around 1230. The
original church was significantly smaller, more or less the size of its present chancel. The church was destroyed in the great fire of 1515, and rebuilt in 1530 as a hall gothic church. From 1560's to 1632 it was held by Protestants. In another big fire, in 1675, was lost nearly all of the decorations and furnishings. The church was given its present shape during the major remodeling that took place in the years 1852-1876, directed by the master Koebeke from Gliwice: the naves were extended, the entrance was topped the brick-made Neo-Gothic gable, and a superstructure was added to the tower. In 1945, again, the church sustained serious damage from fire; the repairs were carried out in the years 1957-1965. Interior: the main altar brought in 1937 from Kaiser-Wilhelm Museum in Berlin, with the painting depicting the Assumption of Holy Virgin Mary, made in 1659 by Ottavio Corradi; in the
southern nave: a copy of the Bytom Madonna picture (original from the 15th century), two portraits of Bytom dukes, Kazimierz and Boleslaw (17th century); on the rearmost pillar of the southern nave can be found Marianna Hauck's epitaph (1680). Also noteworthy: the portal leading into the sacristy (from 1681), and the crucifix found in the southern porch (from 1727).