The noted Spanish artist Javier Olivares has produced a heavily illustrated Spanish edition of Charles Dexter Ward. It’s just been published by Anaya in 200-pages, and there’s a free sample in PDF.
Alternate covers? Or made less scary in the hope of a few extra sales to school librarians?
He’s also done Poe, Dracula, and The Hound of the Baskervilles, in a similar format.