I don't know enough about Mackintosh to realize two of his buildings were close by each other (although that makes sense - it's Glasgow after all). We saw a retrospective of Mackintosh at the Art Institute in Chicago probably in 1998. They had a reproduction of the tea room (not that big of course).

The poor people telling people not to take pictures of the building have a problem 'coz how are you supposed to do that ok? I can see a board thinking it's fine (but those are boards & my own experience doesn't show a lot of good).