Invito irresistibile

This is a billboard at an Underground station in London. I do not find these billboards offensive: they help pass the time while waiting for the train, and it would certainly be worse to stare at bare walls. However, some of the Underground stations have a lot more creative approach, like Charing Cross, for instance, with murals referring to the National Gallery. Baker Street Station is another good example: the corridors are tiled with Sherlock Holmes designs which are particularly apt.