Cathedral Erected on the Castle Hill (Wzgórze Zamkowe) the collegiate church Blessed Virgin Mary Assumption was funded by Gedeon in 1171.
Over the centuries it has been rebuilt several times and nowadays it is an early baroque basilica with three naves. There is a possibility to see its treasury and an underground grave-crypt of local bishops.
In 1171 bishop Gedeon founded a Romanesque collegiate church of the Ascension of the Holy Virgin Mary on the Castle Hill. Altered several times during the subsequent N centuries, the church has eventually acquired its present-day shape of an early Baroque, three-nave basilica.
Its richly decorated interiors feature a Gothic triptych representing the coronation of Our Lady and figures of St Adalbert and St Stanislas, wall-paintings from 1898, a bas-relief of the Holy Virgin Mary made of galena, and the Baroque main altarpiece designed by Jakub Fontana. There is also a highly venerated picture of Our Lady of Grace with the Infant. Tourists can visit the cathedral treasury and the burial crypt of the Kielce bishops.