A very beautiful house of cultural and historical ...

A very beautiful house of cultural and historical value. The design is already outstanding and worth seeing for an opera.
It's a shame that there are no special tours behind the scenes - technology, stage, cloakrooms. That is exactly what makes me curious ... The tour operator should go there and allow selected special tours in small groups. In Vienna this was granted to me years ago. I am sure that there are enough interesting people - with a helmet and safe footwear, it is safe to do!
I'm happy to pay more for that!
It is worth a try and would be a real highlight!