Not too much historical in Oklahoma City (would love to live in Boston, tho- oh the history). There are a lot of neat places that date back to early statehood (early 1900's- I know you east coasters and Europeans are thinking- whoop dee doo- but it's all we have ).
If this counts as historical (can 12 years ago be "historical?"). I live near the Murrah Bombing Memorial. Beautiful, peaceful place. http://www.oklahomacitynationalmemorial.org/