I remember many years ago taking photographs of buildings from the roof down to the shopfront and asking people to recognise the building. There were very many features which were recognised by few. The building facade to Dunnes Stores in Patrick St. is three buildings of very distinct designs but when painted the same colour, they are generally not observed above the shopfront.
Only recent did I spot, for the first time, the (what I think is mosaic) sign at high level on the gable of Mayne's = now pub, former pharmacy. It appears to be a sign written over the original.
A nice reward for looking up.