mysterious gothic castle perched mountain looms bright full moon featuring gargoyles sinister pumpkins and flying bats

gothic castle mountain gargoyles full moon halloween pumpkins bats owls cartoon style creepy spooky dark architecture horror mystical night sky eerie fantasy landscape haunted decorations whimsical purple silhouttes scary enchanted nature twilight creatures magical frightful ruins nocturnal imaginary ghostly sinister tradition folklore october harvest legends shadows trees atmosphere adventure setting ai generated