While this may not look like much to the naked eye, it is actually a long mirror attached to a wall in which an applied lead design is made to resemble a wrought iron gate. What you see in the mirror is a reflection of the garden IN FRONT of the mirror, not a gate, in which you are looking through to see the garden. I have always wanted to do this.
Writing stimulus - what's through the key hole? Make a link with stories, fantasy settings etc. Nice photo for a piece of extended writing, possibly even based on 'The Secret Garden' as I used as a stimulus last year with Year 1.