I just posted the Weekly Challenge "The Place I Live" for this week, and thought it might also be a fun challenge for the month. 31 unique images of the place we live in the manner of the Japanese Ukiyo-e print series, of which a well known one is Thirty-six Views of Mount Fuji http://en.wikipedia.org/wiki/36_Views_of_Mount_Fuji_(Hokusai).
Instead we would have 31 Views of San Diego, or Bamberg, or Dunedin, or Melbourne, or Nashville, etc. I think you get the "picture".
Just a suggestion.