How large is large? ;-)  To get an idea of what Blender can do, have a look at this guys site at the link below. The site is originally in Polish but there is an English translation button if you need to use it. Everything done in Blender.

http://www.gucias.republika.pl/katalog/katalogen.html

Alternatively, take a look at the Blenderartists gallery to see what can be done.

http://blenderartists.org/forum/forumdisplay.php?s=&daysprune=&f=27

Probably not your cup of tea, but this guy is phenomenal and uses Blender exlusively:

http://www.airart3d.com/New_in_Gallery/index.html

Not attempted Blenders nodes yet because it scares the H*** out of me. Then again so does Poser's