Odd and unusual things happen all around us whether we notice them or not. If you’ve ever wondered what green roses or what a wave-shaped cloud may look like, seek no further than the gallery below.

Venerable vernacular snapshot collector Robert Jackson shares a delightful gallery of unusual "before and after" photographs.

Laura Cumming takes a journey through more than 500 years of self-portraits and finds out how the greatest names in western art transformed themselves into their own masterpieces.