Man Rhino is seriously the shit. I used to use it all the time for Uni as you could build a 3d model up from a sketch plan or cad plan then literally use "section" and "make 2d" to give you your sections and elevations which you could gussy up in cad.
My favourite thing to do was cut a section, set up a camera, fill in the cut surfaces with a solid red and then render in V-Ray.
You'd get magazine quality renders providing you applied correct materials etc. Then again you could always export to 3ds max and use V-Ray or Mental Ray for some kick ass renders.. Sorry getting nostalgic.
Jorge, do you think there'd be a section under 3d for environments? There's one I can recall which I believe would apply to Castlevania I wouldn't mind putting up at some stage.