Directly across from the door to Monte Clark is Case Goods Lane. You'll see a row of stores to one side of it and, in it's own building on the right, Balzac's Coffee. Walk down Case Goods Lane until you come to the Case Goods Warehouse. This building isn't a single gallery, but rather houses the studios of numerous artists and a few smaller galleries. Take your time wandering though both floors, and you may just be able to catch an artist in action.
The building is run by Artscape and you can learn more about their use of the building online.
