Who remembers, from the early-70s, a stop-motion sequence of a model apartment house being built?
Narrated by an unseen man and boy, the first thing that was done was to remove all the trees "and then make a biiiiiig hole". Each construction activity on the model was described by the man, then interspersed with real-life footage of said process, such putting in walls or pouring concrete. The result was a 3-story suburban apartment building.
The sequence had a break in the middle, in order to allow the fresh cement to dry. A catchy musical soundtrack on a keyboard synthesizer of some sort ran through the whole sequence, which included a bridge that was heard twice. I distinctly remember the second time was while they were plastering over the drywall gaps "...to make them nice and smooth."