It's also home to the Philadelphia Photo Arts Center, which is a great resource for workshops, visiting artist lectures, exhibitions, and competitions to enter. And even better, it's nonprofit. >>> You would be CRAZY not to check it out here.
Be sure to read the info on the open call for their 2nd Annual Contemporary Photography Competition & Exhibition. The juror is Peter Barberie, who happens to be the curator of photography at the Philadelphia Museum of Art -- not a bad guy to have look at your work. DO IT!
Over and out.