When I worked in Ladbroke Grove, many years ago, there was a mosaic of an space invader on a bridge. After seeing the first alien, I spotted others, including one in Paris. They were apparently put up by a French artist called Invader. It's the sort of art project I love – playfully and subtly adding something to an urban environment. (Hob blog has some images of the London Space Invaders).
Wandering along the ghats in Varanasi with my Dad, I spotted a familiar image. As usual, once I'd seen the Space Invader motif I spotted it elsewhere.
Invader's web-site lists the locations he's visited including Varanasi in April 2008. Apparently there were 14 images in total, including one I spotted – but the mosaic shown at the top doesn't seem to be listed.