**_A woman wanders about a German castle trying to figure out mysterious goings-on_** An Italian production originally called “The Virgin of Nuremberg,” the title was changed to “Horror Castle” for American release and “Castle of Terror” for Canada and the UK. It was shot after Margheriti's “Castle of Blood” to take advantage of the sets and was rushed to completion. Corman’s “The Terror” had a similar story in America, but that one is all-around more entertaining. To its credit, it has Christopher Lee as a creepy curator of the castle museum, but there’s just too much time-wasting scenes,…