Here are some observations that I feel should be noted in the acre listing:

Normal 19 is a museum acre
Barriers 0, 1, 2, and 4 are for the west side of a town (the wall is missing if it goes on the other side)
Barriers 16, 17, 18, and 20 are for the east side of a town
Barrier 13 is the northwest corner
Barrier 15 is the northeast corner

I'm also working on charting the various acres with things like default tree/flower/building placement and stone tiles. Example:



Will take a long time to get every single acre but I'll try to get as many as I can in my free time.