This building is the former headquarters of the polymer corporation Union Carbide. In a contemporary documentary, it's presented as a democratic architecture because it was based on interviews with the employees and all of the office rooms have the same area and thus, everyone can regulate the environment of their room.
Would a native speaker understand it's a documentary coming from the time when the building operated as the headquarters? (not contemporary as in modern)
Is it OK to use architecture to refer to a single design like in my sentence?