We in the United States are once again exceptional. We trounce the world in the amount of retail square feet per person yet are rather pathetic at producing shopkeepers.
Waste disposal remains an issue in the Eastern Market District. Sure, we have moved on from the days when market vendors would just leave waste to be scooped up by front end loaders at the end of the day but throughout the market district dumpsters serving individual businesses proliferate and often are not emptied frequently enough to discourage litter, vermin, and/or odor.
After hanging around the ruins in Athens for a week it's fascinating the way they weave through the fabric of the city. Constructing anything new must be a monumental headache when every excavation for foundations might reveal something significant from one of the many cities that have been built in the same place.