We went to Enid this weekend for my wife's 50th high school reunion. One of he classmates has bought the old Champlin mansion. It is 20,000 square foot three story house with 14 bathrooms, and an elevator. All built in 1939. The descendants that had owned it, always kept it maintained to some level, and never let it fall into much disrepair. They all live in Dallas area, and coming to Enid, OK is just not part of their lifestyle.
The family that bought it, have spent a lot to modernize it some, and it is just a really cool place. Wonderful old world craftsmanship throughout, from the basement to the attic. The new owners gave us free reign to explore the place. There is one room in the attic that is bigger than most homes bedrooms that is used as just light bulb storage. The have a nice greenhouse in the back yard. Last week, the monarch butterflies stopped there in the hundreds in the back yard.
https://en.wikipedia.org/wiki/H._H._Champlin_House