Built in 1945. With its big white walls, and almost without windows and with an incline, it is known as "the bounce board." It was made by Stefan Kacin, Jurij Princes, Bogdan Splindler, and Marjan Urshic. The theatre has a large stage and seats for 850 spectators, and also a small stage for 200 spectators. The State Ballet is also stationed in this building. This theatre holds theatre, opera, and ballet performances all year round.