"I love wood so much better than canvas," said Crystal Obeidzinski, an artist who paints on old doors she finds at the Green Project. "You look at these doors, this city - we just turned 300. Some of these doors used to be a hundred years old. I don't know what happened before that, so each one is different and tells a different story. So when you get it, you're adding to its story instead of starting from scratch."