Elfreth Alley claims to be the oldest residential street in America. I guess that depends on how you define residential street, since Old Oraibi in Arizona has been around much, much longer. But this is very interesting place in downtown Philadelphia. When I was in high school, I took a class in mechanical drawing and learned about perspective drawing. This photo is a classic of perspective. The two stone tracks merge at the vanishing point and all the lines on the houses are parallel and also merge at the vanishing point.
I would rather spend time in this type of place than all the commercial attractions a city has to offer. I liked this much better than Macy's for example.