We had a big architect refurb of a bit of our old building which had lovely big skylight windows from the Victorian industrial times whereby that was the only way you got light into the building. It's listed so you can't do stuff that is too radical to it, but again the architect vision was to 'enjoy' the lovely light rather than blocking it in any way. We moved into it over the summer and it was ice lollies all round, people being sent home because it was too hot, and bedlam in general.

The windows are now supplied with blinds where possible and with opaque tint on the skylights - it's a shame not to be able to see the sun but the comfort is definitely better.