Final answer:
The building designed by Victor Bourgeois in the 1920s is called La Cité Moderne.
Step-by-step explanation:
The building designed by Victor Bourgeois in the 1920s is known as La Cité Moderne. This was a period marked by significant advancements in architecture. For example, the Villa Savoye was designed by Le Corbusier as a manifestation of his five pivotal architectural principles, demonstrating a revolutionary approach to residential building design.
A similar revolutionary spirit can be seen in constructions by others during the era, highlighting the transformative ideas of International Style and Post-Modern Architecture. However, the specific structure attributed to Victor Bourgeois remains La Cité Moderne, which is a distinct architectural accomplishment of the 1920s.