Well right now I'm very fascinated with 1920s Berlin. I mean probably the more interesting thing would be to go to the beginning of civilization or precivilization - like polytheistic times. It would be interesting to see what came before modern religion and culture - what circumstances created the environment or the need for it.
One of the main reasons I am so drawn to Hitchcock is that he planned his shots way in advance on story-boards which he designed like classic paintings (he was an art connoisseur). It's why he found shooting on set boring - because he had already composed the film in his head.