![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 | 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 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](https://img.freepik.com/premium-photo/beautiful-empty-parterre-part-orchestra-pit-theatre-concert-hall-vienna-state-opera-auditorium-with-red-seats-rows-without-people-vienna-austria_338799-4938.jpg?w=2000)
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
![Opening of the New Theatre Royal, Manchester, 1845. Interior view of a packed house. 'The architects of the new Theatre are Messrs. Irwin and Chester, of Manchester...The audience part of the house Opening of the New Theatre Royal, Manchester, 1845. Interior view of a packed house. 'The architects of the new Theatre are Messrs. Irwin and Chester, of Manchester...The audience part of the house](https://c8.alamy.com/comp/2E2JBFJ/opening-of-the-new-theatre-royal-manchester-1845-interior-view-of-a-packed-house-the-architects-of-the-new-theatre-are-messrs-irwin-and-chester-of-manchesterthe-audience-part-of-the-house-consists-of-a-pit-floor-and-four-tiers-of-which-three-tiers-extend-round-to-the-stage-and-the-fourth-is-a-central-space-abstracted-from-within-the-roof-of-the-building-on-the-floor-are-the-orchestra-the-stalls-and-the-pit-the-first-tier-is-the-dress-circle-the-second-the-upper-circle-the-third-the-gallery-in-the-centre-and-side-upper-boxes-and-the-fourth-the-upper-gallery-the-dress-circ-2E2JBFJ.jpg)