If you've been to the UK (or, you know...live there), you'd have seen some blue plaques on the buildings and streets. Since 1867 they've been "installed in publicly-visible locations on buildings to commemorate either a famous person who lived or worked in the building (or site) or an event that occurred within the building".

Relevance to us? Lara Croft's getting one. The site of the old Core offices where she was "born" are about to be turned into a block of flats, and once work is completed, a blue plaque will be placed on the building's walls.