I visited ancient Pompeii about a decade ago. The roads were basically open sewers. Nice. There were stepping stones at regular intervals so that you could cros

I visited ancient Pompeii about a decade ago. The roads were basically open sewers. Nice. There were stepping stones at regular intervals so that you could cross from one side of the pavement to the other. There stones were spaced so that the wheels of a horse-drawn cart could travel unimpeded.