George Coppin ("Father of Australian Theatre" -- but actually more active in promoting touring entertainers) set up a retirement home for old entertainers. Not quite the same idea -- but worth mentioning. It still exists as far as I know -- in Melbourne.

There's often whole towns going up for sale, in Australia, in the bush. We've often talked of how great it would be for a bunch of old Folkies to collectively buy a town.
Cheers, Joy