The theatre has two concert halls: the major one which holds 540 persons and the minor one for 100 viewers. They are both equipped with cutting-edge technology, which provides perfect conditions for listening to music in the Opera at the Castle. The representative O. Gallery located on the main floor, with its reconstructed renaissance entablature is used for exhibitions and is an additional third stage used for workshops and shows for children. The major auditorium consists of the arena seating, the main balcony and side balconies. On the main floor there is a lodge and places for people on wheelchairs.