In the uncropped box art shot, Plant Castle is also in view, so the piece does a great job of depicting the full initial scope of the game with its composition. Christopher tangling with the Iron Doll in its proper Rock Castle habitat just completes it as an authentic tableau.
I'm also a big fan of the Dracula Densetsu II cover for the evocative framing and use of colour, and Christopher's particular representation. There are very few "canonical" illustrations of him and this is one, which characterizes him as an older Belmont than the standard. We would have Julius later, but Ayami Kojima renders him at best a very idealized mid-fifties gorgeousman as is her wont. Christopher is a minor protagonist in the series's overall standing despite fronting three different games, and one of the few characteristics there are to latch onto with him is that he is vaguely middle-aged by those later days, and kind of a craggy tree trunk of a man who's mundanely aging despite still retaining his ripped physique.