The inside of the cathedral with surprising colours covering the walls and ceiling is particularly worth seeing. Polychromies created in 1922-1925 by Henryk Jackowski have their roots in modernist Młoda Polska artistic movement. The cathedral’s interior is a mixture of gothic architecture, Baroque altars and chapels in astounding colours. There is an 18th century Holy Cross Chapel in the cathedral, a 16th century painting of The Virgin Mary with a Rose, a 17th century ambo, stall and a brass baptismal bowl. The cathedral is also a sanctuary where a precious painting of Virgin Mary of Sacred Love – the patron of the town and diocese - is located.