Castle Blood Haunted House in Monessen, Pennesylvania The haunted house to see in southwest Pennsylvania. Classically styled monsters, vampires, and ghouls roam the halls of Castle Blood. Walk the halls with them if you dare. A Halloween Tradition in SW Pennsylvania, since 1993, Castle Blood celebrates another season this October with another challenge for you. Our Theatrically beautiful game-based Halloween Adventure Tour. will give you all you want from a haunt, True Classic American Halloween. If you love old monster movies, and classic autumnal hijinx, we are the place for you. Read more…