Ad campaign: Concrete jungle

A small town is trying to attract business to their community by pointing out the downsides of big city life. They need images of imposing buildings towering overhead, seeming to oppress those beneath. While they have the idea of the claustrophobic buildings, they're willing to accept other images that get the message across, but they don't want pictures of crime or litter. Submit suitable images. Remember, the goal is to frighten the viewers, not inspire them.