Markm.... in some areas the border is nicely defined, in other areas the borders literally go thru people's property.

8 Mile is the border bertween Detroit and northern burbs. Ditto for Harper Woods and St. Clair Shores. But once you hit the Grosse Pointe Woods and Grosse Pointe Shores border with St. Clair Shores, 8 Mile Rd. ends, and its starts getting very confusing, because the border literally does go thru private property and peoples houses.

This same scenario happens on the far west side, where Paul St. is part of the border between Detroit and Dearborn. But there is a section of Paul St. that zig-zags up and down again that also cuts thru private property and people's houses.