Citiography's seven reasons include the fact that state spending attracts federal spending, and that historic buildings are energy efficient:
"Well, they are when you take into account where they are. Historic buildings, like I said, are in the middle of your towns and cities. They require less driving for the people that live there because they're closer to downtown and, well, each other. Transit systems serve them easier and people can walk to their destinations easier. And have you ever considered the energy it takes to tear down a building and construct a new one? Stuff them with insulation and fix the windows and they're as good as anything you can build today."
Thanks to Kelly Bennett