There are so many questions worth exploring. What are the oldest buildings in various cities that still command high rents? What made that happen? What kinds of buildings were torn down, and why? What is the distribution of building types in a city, and how does their longevity sort out? How about in small towns? What is the real distribution of design approaches—how many buildings are specially architected, versus franchise cookie-cutter, versus developer assembly-line, versus vernacular?
