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Premium Photo | Beautiful of the empty parterre and part of the orchestra pit in the theatre concert hall of vienna state opera auditorium with red seats in the rows without people
![Acoustics | Free Full-Text | The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna Acoustics | Free Full-Text | The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna](https://pub.mdpi-res.com/acoustics/acoustics-01-00041/article_deploy/html/images/acoustics-01-00041-g001-550.jpg?1568876796)
Acoustics | Free Full-Text | The Proscenium of Opera Houses as a Disappeared Intangible Heritage: A Virtual Reconstruction of the 1840s Original Design of the Alighieri Theatre in Ravenna
![Premium Photo | Wonderful view of the theatre concert hall of vienna state opera auditorium in vienna, austria - empty parterre with red seats in the rows without people and part of Premium Photo | Wonderful view of the theatre concert hall of vienna state opera auditorium in vienna, austria - empty parterre with red seats in the rows without people and part of](https://img.freepik.com/premium-photo/wonderful-view-theatre-concert-hall-vienna-state-opera-auditorium-vienna-austria-empty-parterre-with-red-seats-rows-without-people-part-orchestra-pit_338799-4936.jpg?w=2000)