The Cooper Theatre was the first of three Cinerama theaters built by the Cooper Foundation in the early 1960’s. Known as the Golden Triangle, the three theaters were located in Denver, Omaha, and Minneapolis. Complete with massive screens and the latest sound technology, all three were designed to exhibit films made in the 3-strip Cinerama process.
Renamed as the Cooper/Cameo by the 1970’s, the theater later became part of the Commonwealth Theatres circuit, who franchised the Cooper name. They also built the Cooper 5, Cooper 6, Cooper 7, and Cooper Twin (none of which were Cinerama theaters), which were constructed to mimick the round, elevated roofs of the existing Cooper theaters.
After Commonwealth, the Cooper Theatre was run by United Artists, who continued to operate the theater until it was sold. Like Cinerama itself, the Cooper Theatre in Denver did not last forever. After years of changing hands, the massive theater was finally sold to Barnes & Noble, who razed it to build a new store.