We very very seriously considered a house in Alsace. Very good price, very nice mountain and area with skiing and local wines. I had friends there too, but it just didn't sit well with my wife.
Meant a whole new language and culture for her and no friends or family connection.

On the whole we made a pretty good decision where to retire given the options.

Now, If I'd had been single it would have been a beautiful bachelor-pad in Turckheim