A separate wooden building was constructed in what is now the Bibliothekshof  by Lodovico Ottavio Bumacini for the wedding of Leopold I and Margarita Teresa in 1666. It had a rectangular shape (64.6 x 26.6 m., 14.6 m. in height) with three galleries and probably seated about 1000 persons.

In: Harer, Ingeborg (1995) "Musical Venues in Vienna, Seventeenth Century to the Present,"Performance Practice Review: Vol. 8: No. 1, Article 8. 

It had two arcaded levels of galleries and the acting area, as usual, spilt forward on to the floor of the house. As rebuilt thirty-five years later by Giovanni's son, Ludovico, it had three tiers of galleries on an awkward rectangular plan, but a splendid trompe-1' ceil ceiling which made it seem larger than it really was.

In: Tidworth, Simon : Theatres: An Illustrated History. London 1973 p.74