Yeah somewhere in the Black Hills outside the tourist trap zone (if such exists), might be acceptable. Back in college, circa 1970, en route from here to there, I visited McGovern's hometown in SD (the name currently escapes me, but it is the arable cropland belt in the eastern part of the state as I recall), which McGovern pined to purchase the richest man's house, and finally succeeded in acquiring the nondescript quiet modest brick home (albeit on a desirable corner lot) when he made a success of himself in the big city. The temperature was close to 110 degrees Fahrenheit with about 85% humidity, a veritable natural sauna bath. Oh, the crazy things the obsessive do. Pray for us all. Amen.
I believe he was FROM Avon, but but by the time of his Senate and Presidential runs he lived in Sioux Falls.