Neighborhood Associations & Info - Callowhill

http://www.callowhill.org/

My neighborhood has a pretty active neighborhood association. They do various things from security to maintaining a neighborhood garden. The website is fairly informative with a lot of information about community events and links to business and organizations within the neighborhood.
It also defines the boundaries of the neighborhood (roughly 3 x 6 blocks) and lists past/future accomplishments such as implementing a new recycling program.

The neighborhood has a huge arts community with many galleries in the old loft buildings, and the Folk Arts - Cultural Treasures Charter School is located at 10th and Callowhill. There are also other schools, restaurants and many business from manufacturing to independent clothing design.
Spring Garden provides a nice jog to the Schuylkill past the art museum, there is a yoga studio, and Fairmount Park and several fitness clubs are in close proximity.

In addition, there is a greenway project proposed for Vine St. to serve as a community connector.

http://www.pps.org/vineonline/

And last but not least for all the preservationists...

http://readingviaduct.org/

I see the Reading Viaduct from my window and walk under it daily. The site seems to be a bit out of date and minimal, but it would be interesting to investigate this project further to see any proposals.
It would make an interesting greenway if it could be made safe... It already has a lot of plants growing on it.