History
The Century 21 Theatre

The architect’s rendering, published in Boxoffice in May 1966.
Architect’s rendering, Boxoffice, May 16, 1966. Courtesy moviejs1944 / Cinema Treasures.
Ben and Gary Antonoff built the Century 21 Theatre, and National General’s Fox Theatres opened it on December 22, 1966. It was a single-screen movie house with 1,065 seats at 1370 South Colorado Boulevard, designed by Crowther & Associates.

The Century 21 during its opening run of Gambit.
The Century 21 during the run of Gambit. Image: Chris1982 / Cinema Treasures, CC BY 3.0 (resized).

The opening advertisement, December 23, 1966.
Fox Theatres advertisement, December 23, 1966. Courtesy rivest266 / Cinema Treasures (public domain).
A White Spot coffee shop sat beside it — one of the Denver chain William F. Clements started on South Broadway in 1947 and grew to twenty-nine restaurants.

The lobby and concession stand, as Boxoffice photographed them.
From Boxoffice. Image: DENNISMAHANEY1 / Cinema Treasures.

The auditorium, 1,065 seats.
From Boxoffice. Image: DENNISMAHANEY1 / Cinema Treasures, CC BY 3.0 (resized).
The Century 21 ran first-run pictures for twenty-six years, starting with Gambit, with Shirley MacLaine and Michael Caine. It was renovated as a THX house in the late 1980s, which made it a regular venue for the big action and science-fiction releases of the era. It closed in 1993, and the auditorium became a Soundtrack electronics store, later Ultimate Electronics.
The theatre came down in 2011 and 2012 to make way for the shopping center that carries its name.

Century 21 Plaza, February 2024.
Century 21 Plaza
Antonoff & Co. redeveloped the corner and completed Century 21 Plaza in 2013 — retail and restaurant space at the northeast corner of South Colorado Boulevard and East Arkansas Avenue. It won the Rocky Mountain Shopping Center Association’s inaugural STAR Award for New Construction over 20,000 square feet.
Although the beloved Century 21 Theatre building gave way to a high-visibility retail center, its iconic name endures on one of Denver’s busiest thoroughfares.