Urban ore is an experience. It's a huge warehouse with everything from old organs to sinks and lighting fixtures. The prices seem higher than at other used building supply places, but if you want something SPECIFIC, this is a great place to find it.
Lots of clawfoot tubs. Very crowded on weekends.
One odd thing of note:
For some reason, the whole place smells like cat pee, even the outside area.
Pros: Lots of selection...
Cons: Prices can be high...