Built in 1885 as a city theatre according to the design of the specialized Vienna Helmer and Fellner workshop, which designed similar buildings throughout the Austro-Hungary of the time. Matsch, Kauffungen and Fritsch, and the Klimt brothers, permanent associates of the workshop, were charged with equipping the theatre, contributing to the pronounced central European atmosphere of the town. The exterior is adorned by figurative compositions of Music and Drama by Venetian sculptor Benvenutti. The opening of the theatre was marked by a performance of Verdi's Aida.

The interior of the church is a true Baroque Gesamtkunstwerk, a unity of style that perturbs the Early Gothic crucifix, imbedded in the middle of the main altar. The authors of the profuse marble Baroque sculptures in the interior are masters P. Lazzarini, A. Michelazzi and L. Pacassi. St. Vitus’ is a unique Baroque rotunda of such monumental dimensions built in Croatia. The church is the only remaining part of a once vast Jesuit complex that included a seminary and a college, but was demolished in the period between the two world wars. The portal of the College has been preserved, however, by being transferred to the deanery next to St. Vitus.

. The church and the monastery form a harmonious combination of Gothic, Renaissance, Baroque and Biedermeier building phases. The splendid interior of this peculiar two-nave church comprises two particularly beautiful cloisters and a summer refectory with a large Mannerist canvas by S. Schön and works of the Baroque painter C. Tasca. By far the most splendid is the Gothic polyptych with the central presentation of the Madonna with the Child. The wealth of the monastery treasury is testimony of the popularity of the sanctuary of Our Lady of Trsat, which was abundantly endowed first by the Frankopans, and later by numerous other Croatian and Carniolan noble families, as well as by members of the Habsburg dynasty. The art gallery is constantly enriched by new donations. The Votive Chapel contains numerous picturesque popular illustrations of the miracles of Our Lady of Trsat, but also a fine Gothic sculpture of Our Lady of Slunj.