A while back in a post here I mentioned the contrast between the rural surroundings where I live, with almost no visible advertising to be found, and the ad-saturated environment in mid-town Manhattan. The small city of Bristol, CT, has nothing like the density of New York, but still displays plenty of billboards. Some, like the first one here, are for major international brands just as you'd see them on a highway with heavy commuter traffic.
Some are for relatively small businesses, like the local hospital and a restaurant located in the next town north.
This triple board (with a double facing the opposite way, behind it) is mounted on an old elevated railroad bed that runs through the center of town. The sponsors seem to be a blend of public service and private ventures.