People who live in glass houses shouldn't throw stones.

That's an old saying that I once heard.

Quite what it means, I don't know - I can't think of anyone who lives in a glass house. The only glass house I know is the greenhouse in my neighbour's garden - and there are certainly no people in there. Just flies.

And flies aren't people. They haven't evolved yet!

So, anyway, the saying is obviously gibberish - but it is relevent to this WOW: the most transparent building. You see, it is so transparent, you might think it was made of glass!

It's not, though. For its transparency is due not to the material, but the magic spells that have been cast upon it!

The most transparent building is Hogwarts, where Harry Potter lives.