If you live in the city (either one), you probably don't think much about your alley, other than to wish it were wider, and that your neighbor painted his garage. (Although, to be honest, yours peels a bit here and there.)
You might not know the person on the other side of the alley — a bit odd, when you think about it. You're more likely to know the person on the other side of the street than the person behind you. It's as if the fact that your backyards face each other is embarrassingly intimate.
The front of your house, that's the public face. The alleyway is where your pants sag.
If you happen to drive down an alley not your own, you feel like an interloper — and you learn things about the neighborhood.
Stable neighborhoods have uncluttered alleys with garbage and recycling bins standing in formation like soldiers. Challenged neighborhoods have alleys with busted fences revealing unkempt yards heaped with unused plastic children's furniture, an old tube TV and stout, unidentifiable weeds that grow 5 feet tall.
They could look better. In fact, almost all alleys could look better. But it would take money, laws, initiative and, perhaps most formidable, a change in the way we think about alleys.
If we think about them at all, which we don't. Which is why they're ugly.
Old European cities have alleys, but they function more as small streets, arising over the centuries as the cities sprawled without plan.