The Cathedral of the Holy Cross (Polish: Katedra Podwyższenia Krzyża Świętego), also called Opole Cathedral[1], is a religious building affiliated with the Catholic Church that serves as a parish church and the cathedral city of Opole[2] in Poland.

On April 3, 1964, the temple was entered in the register of regional monuments of Opole under number 763/64.

With towers with a height of 73 meters is the tallest structure in the city.

In the temple there is a painting of the Virgin of Opole, brought there permanently in 1702.

The Cathedral contains the Piast Chapel, which is the burial site of Duke Jan II the Good of the Piast dynasty.