Comment a bit disingenuous (Score 4, Insightful) 120
I think it's a bit disingenuous to say that this is the second-largest human created structure. While this is an impressive experiment which I think is very clever and great for physics, calling this a structure is a bit of a joke.
If you were to call an array of phototubes a structure you could easily compare it to, say, the street lights of Los Angeles -- which I'm sure would be counted as a larger "structure".