Speaking of Wayne County farmland, I like the little oddities of the last farmland patches in urban counties.
Cuyahoga has a few fields left in
North Royalton and larger concentrations in
Olmsted Township.
Marion County, Indiana still has a largely rural
southeast corner despite Unigov bringing that into Indianapolis city limits.
Milwaukee County has its southern row of cities like Franklin, WI still being
half farmland
Most interesting is Cook County: setting aside the horse country in Barrington Hills, the southern suburbs are very patchy development, meaning you get scenes like this
around Chicago Heights. I know those southern suburbs have issues with decay and poverty, but still surprising that they never "filled in" with cul-de-sacs like other Chicagoland directions.
Ramsey County, Minnesota (St. Paul) is the only completely filled-in Midwestern county, which is largely due to it being tiny (a sixth of Cook County's size!)