The Civic Opera House: "Insull's Throne"

The Civic Opera House, aka the Lyric Opera House, opened in 1929. It's home to the Lyric Opera that's been performing operas there for over 70 years. It is a 45-story, Art Deco skyscraper that's over a million square feet! Why in the hell would any opera house need so much space?!
My wife and I went to see "The Daughter of the Regiment" there in November 2023. Opera's not not as fun as a Cub's game because you're not allowed to form a beer snake or throw baseballs on the opera stage, but there's enough demand for opera in Chicago because the auditorium seats over 3500 people.