While colleges were the primary location that theater started in Colorado, the Auditorium was a magnificent structure first built in 1908. William Jennings Bryan was nominated to run as the Democratic candidate in one of the first events there. The building could initially host any event from opera to rodeo. The seating capacity was flexible, from 3,000 to 12,000.
There have been several renovations to the building, adapting it from the original flexible space to separate theater and arena spaces, then eventually to an opera house. The building was opened as the Ellie Caulkins Opera House in 2005, which currently seats 2,200 patrons and hosts many opera and musical performances today. Here is a good Wikipedia article article on the full history of the building.
Denver Auditorium
Built in 1908 - The Denver Auditorium (first known as the Denver Municipal Auditorium) In 2005, the Auditorium was renovated and became the Ellie Caulkins Opera House where it continues today as a showcase theatre venue for opera, plays, and concerts.
Ellie Caulkins Opera House - Entrance
Entrance to the Ellie Caulkins Opera House after its renovation in 2005
Ellie Caulkins Opera House - Interior
Inside the Ellie Caulkins Opera House after it was renovated in 2005.
I Do! I Do! - 1968 Program
Program for the Denver Auditorium Theatre. Starring: Mary Martin and Robert Preston, who were huge stars at the time!
In two Keys - 1976 Program Cover
Noel Coward wrote "In Two Keys." it was presented at the Denver Auditorium Theatre and produced by Robert Garner Attractions, Inc. - Starring: Anne Baxter, Hume Cronyn and Jessica Tandy