[chubot]

Two good examples of the flip are the Ferry Building in SF and Chelsea Market in Manhattan. Those used to be big industrial / shipping / cargo buildings but now sell upscale food :)

It's kind of funny how you see the same economic patterns play out in different cities over hundreds of years

Another pattern is that train stations and big US post offices are often in the oldest parts of town, and I think they have started to move over the years. That real estate is often extremely valuable, so the govt or business finds something else to do with it