Just bumping this because I still don't have an answer. It's possible I misunderstood Petar's advice. Petar, where you mention domains I assume you're talking about domain aliases. Am I right? If so, your advice doesn't work for me because it doesn't seem possible to define a domain alias with a sub-directory.
To restate my requirement, I need a domain.com site which, for example, has 2 translations (domain.com/en-gb and domain.com/fr-fr). This site also has region-targeted sub-sites on the same domain so, for example, domain.com/france would have its own navigation and potentially own translations (domain.com/france/fr-fr and domain.com/france/de-de).
Logically in the content tree I need these country sites to be grouped under one node, so domain.com/france would actually be domain.com/Countries/France/Home. Or event better, I'd ideally have these country sites managed as separate Kentico sites which are somehow configured to load under URLs as described with one root domain.
Is there any way to achieve this in Kentico?