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.
Take for example the African jungle the home of the cheetah. On whom does the cheetah prey? The old the sick the wounded the weak the very young but never the strong. Lesson: If you would not be prey you had better be strong.