I finally got to it!  An official little art gallery!  Complete with a grooved ledge on the back and side walls, four tiny easels (they're so cute), and a locking latch with two keys.  
 
The perfect place to share your imagination and spur the creativity in others.  This open concept gallery will suit all your artistic whims.
 
The gallery is 19 1/2" across, 12" deep, 17" tall at the front, plus the roof.