The building is covered by a 25-meter copper sloping roof. And its 18-meter high interior was closed with a gothic star vault supported by five pairs of strong pillars.
Just under the beautiful vault, in the back of the collegiate church, there is a choir. Expanded in 1914, today it catches the attention of not only sound lovers but also architectural experts. During this extension, the chancel located there gained a beautiful crystal ceiling finial.

In 1895, the faithful were accompanied by 32-voice organs during masses and services. Those standing there were ordered today by an unforgettable priest of our collegiate church, priest Józef Kubis. In 1941 it was made by the "Rieger" company from the Czech Krnov. During the last renovation of the organs in 1996, they were again enlarged by an additional section - Spanish trumpets, which is a special group of voices that sound extremely strong.
On the pulpit located on the right side of the stucco nave, there is the figure of Sibyl holding the shield of the Holy Spirit and the book of the Gospel with the names of evangelists. It was funded by the community of vicars, and it was done in the classical style in 1805 by the Wrocław stucco Hans Echtler.