Re: The House in the Clouds
I've never seen or heard of it before, but after a quick check: yes, it has been a water tower that was no longer necessary and converted (in 1923-ish).
Somewhere, I'm not sure where, there is a web-site for a british company that builds tree houses, for kids and/or adults. You can actually live in some of them and I think I just discovered another life ambition... ( i want one, dammit!)