When i saw this artwork in Digbeth Birmingham a while ago - i was thrilled - a massive poster-ad depicting just what's behind! So clever! Almost as if turning the wall into a window!

I always hoped to see more of these - but it seemed the artist only ever did this one. Or does any one know more like these?

That's what's on the poster... (the green writing says: "Pointless" - not sure if it comes from the artist himself)

...and that's what's behind.