In the opinion of one who has toured the 45th (not I), this is "easily the most elaborate marker." To one who lives near here, it represents where the Canadian border would be if not for a cartographic error placing the border at its present and accepted location, a tad over a mile to the north.
Yup, this is where Canada and the US were supposed to meet. Way back in 1772, the surveyors goofed it.
The 45th is commonly described as the midpoint between the Equator and the North Pole. While it is true that latitude between the two is comprised of 90 degrees (making 45 the halfway mark), there's an issue involving solid geometry: Planet Earth is not a sphere. Rather, it is an oblate spheroid. Simply put, the equatorial diameter is greater than the longitudinal diameter, making the true midpoint in distance about 10 miles north of here, just above the village of Sutton, Quebec.
So let's call this the nominal midpoint, and I'll be satisfied that I don't live a mile closer to Canada.
Erected by American Legion Post 12.