Shops such as groceries, bakeries and drug stores were usually built near the intersection of streetcar lines or directly along more heavily traveled routes (otherwise, routes would simply be lined with houses similar to those found in the surrounding neighborhoods). These shops would sometimes be multi-story buildings, with apartments on the upper floors. These provided convenient shopping for household supplies for the surrounding neighborhoods, that could potentially be visited on one's way to or from work. While there were stores near houses, they were not quite as close as in older parts of cities, and they were usually confined to specific streets, representing the beginning of a complete separation between residential and commercial areas in cities.