I've looked at the Pardulon stand at Salute for the last couple of years - I think you could achieve a similarly attractive and complex timbered structure using their range of modular components - although no doubt at quite a high price!
There are a few examples on my site which, demonstrate that it could be done. Mainly this picture:

And there is always
Pardulon CastleBut you can always start with a smaller building, and add more floors, roof extensions and outbuildings later. And if you follow the building instructions, you have accessible rooms complete with interior detail, too

Cheers,
Jens Beckmann
http://www.pardulon.com