There is rebuilding of some cities, street scapes, building rehabbed, many store fronts are empty, seemingly waiting for the mad rush back down town at some point in the future.
I'm reading this book "The Death and Life of Great American Cities" Jane Jacobs. (14.95 @ Borders) This is the greatest real estate book I've ever read and has many applications of re business.
This book tells why sidewalks work, playgrounds work, the effects of transportation (vehicle and pedestrian) why inner city projects continually fail, how to recognize the unslumming of an area, you name it, if it affects an urban area, this book covers it.
I'm telling you, if you read this book, you'll drive down the street and just look at the businesses, structures that are there and get an approximate land value and long term potential.
This is important as the retiring generation seeks out downtown to move to. The downtown could be a great big flop for your dollar if all the pieces do not fall into place. It may look nice but will lack the diversity that makes it work.