The oldest parish in Bytom is that of the Assumption of the Blessed Virgin Mary. The first Gothic church was built here as early as 1230. Only a few remnants of that church have been preserved to our times. The present building is the result of numerous reconstructions for instance, the characteristic brick superstructure of the tower dates from the second half of the nineteenth century. Inside the church we can admire Gothic vaultings, Baroque altars and a beautiful icon of Our Lady of Bytom.