According to the wikipedia entry for list of largest buildings in the world, this m.f. of a building is the 10th largest in the world in area, and 3rd largest in the US. Even if this is just an urban legend, I still respect it. Probably because the building is nearly half a mile long, and I have to walk through it every day.
Note to self: if I ever get sick, go to UW Medical Center. By the time I get out of there, I'd be fit as John Basedow. I mean, those cruel bastards'd probably make me go a 1/4 of a mile just to pee.
To illustrate my point, here's a map of (most of) campus. The red circle indicates the building I'm talking about. My home. Too big to circle. But not too big for my heart.
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And I'm man enough to admit I've only visited wings J, I, H, F, T, AA, and RR. I've still got lots of exploring to do.