This is a Nifty idea in the realm of urban renovation, renewal and recycling of Historic sites.  The city of Indianapolis is creating Apartments on the site of a historic minor league Baseball stadium, while maintaining the actual playing field in the center

http://www.governing.com/blogs/view/gov-indianapolis-building-first-ballpark-apartments.html

The pictures show what could be a Beautiful site, maintaining a link to the past while drawing in new residents. and (hopefully) a more energy efficient building.  It looks like the existing overhang is going to be elevated from the roof, it will lower cooling costs for that section of the building, (a cheap and easy "green" choice