The church of the Assumption of the Blessed Virgin Mary is now the oldest church in Rybnik. The shrine is dated to the, the fifteenth century. Originally, the church was dedicated Our Lady of Sorrows. The only remaining part of this church is a presbytery, which was converted into a mortuary chapel, while the rest was demolished in the late eighteenth century. At that time, a new church dedicated to the same patron saint was erected. Currently, the old sanctuary is used as a university church.