"This is Marina City" (1965) [Enhanced 4K, 60fps] 

Marina City, often known as "the corn cobs", is a mixed-use residential-commercial building complex in Chicago, Illinois, designed by architect Bertrand Goldberg.
The complex consists of two 587-foot (179 m), 65-story apartment towers, opened in 1963, which include physical plant penthouses. It also includes a 10-story office building (now a hotel) opened in 1964, and a saddle-shaped auditorium building originally used as a cinema. The four buildings, access driveways, and a small plaza that originally included an ice rink are built on a raised platform next to the Chicago River. Beneath the platform, at river level, is a small marina for pleasure craft, giving the structures their name.
-
This documentary film was produced by the Portland Cement Association, narrated by Walt Newton, and written, directed, and photographed by Arthur P. Mandler.
I've helped to enhance, colorize, and upscale the documentary to 4K/60fps using de-interlacing methods, Chronos framerate conversions, Artemis AI, and the Proteus 6-Parameter model (e.g., fine-tune de-blocking, detail recovery, sharpening, noise reduction, de-haloing, and antialiasing).
Enjoy!