© Andrew Bossi - Own work CC BY-SA 2.5

Opera had been performed in Graz since the 17th century, originally in a converted coach house on the Habsburg royal estates. The National Theatre (Schauspielhaus Graz), constructed in 1776, saw many early performances of Mozart's operas, although today (after many reconstructions) it is devoted to the performances of plays. (Wikipedia)

Wikipedia	Graz_Opera
Capacity	1400
Address	Kaiser-Josef-Platz 10, 8010 Graz , Graz, Austria
Architect	Ferdinand Fellner and Herman Helmer
Opening year	1899, September 16th
Official website	https://oper-graz.buehnen-graz.com/