I was in Philadelphia last Thursday evening, and I discovered that I was staying near Space 1026, a studio/gallery near downtown. Some artists from 1026 had some cool work in a show at Yerba Buena a while ago, I walked over and spent a few minutes walking around as the residents were setting up for the place's 10th anniversary party.
It's got a pretty great vibe; part punk club, part workshop, part hobo village. Situated above some retail space near the bus station, there's a nice open space in the front, but the majority is sectioned off into seven or eight (or more) mostly small studios densely packed with art supplies, knick-knacks, bikes, and other crap. I didn't get to see much, but I took some pictures of the various hallways and spaces so check em out.