The Stables Theatre not only presents plays but also has a small gallery. It's at the top of the High Street in the Old Town.  

This show, Off Grid, is certainly worth a visit. It's an exhibition of work by Henry Binns, Denise Franklin, Sarah Palmer and Lynda Franklin. It's from 1st October until 1st December, open Monday to Saturday 10.30am - 2pm and 6pm- 8pm.