Museum of Scotland
From the outside it isn’t a building I find very inspirational, although it isn’t especially bad either. Inside is another matter – it has great space for the exhibits, which take you through Scottish history in a roughly chronological order through many floors. There is a lot of natural light even on overcast Scottish days, as you can see here and one of the things I especially like is the irregular shape within – there are little passageways and sudden openings onto short bridges spanning drops like these in the pics here, little balconies in funny corners there for no other reason than to let folk stick their head out and get unusual views. I also like the interface between the old building, the Royal Museum and the new.