Unfortunately, for lack of space most likely, the paintings are painted over every few years, with some exceptions.
This one, for example, is my favorite (in the above picture it is one the far left of the middle row), and has been here since I began Crossroads around six years ago.
It would be heart-breaking if this particular painting disappeared.
I think the painting is awesome. And I really want to find out who did it. I have to say I think a really cute part of the painting is the fact that Batmans' ears bend back.