The border corners of Australia are the meeting points of state or territory borders.
There are five such points, each recognised with a boundary marker, and all located in remote areas.
[1] The five border corners are: South Australia’s eastern border was supposed to follow the 141st meridian, but the first surveyors measured incorrectly.
[2] A 70-year border dispute followed, and eventually resulted in the disjointedness of MacCabe Corner, with Victoria using the original incorrect calculation, and New South Wales using the new and correct one.
[3]