Yeah we saw this in a couple of our structural engineering (carpenter version) classes. It actually wasn't caused entirely
by an engineering mistake. It was also due to p!ss poor planning and building location.
Notice in picture 4 the huge pile of dirt that is in the front of the shot. That was actually the result of an ongoing excavation for an underground parking garage. Yes, believe it or not the parking garage was being constructed after
the majority of the building was completed.
The removal and placement of the 100's of tons of dirt in conjunction with the high moisture content (note the wet conditions) resulted in the building beginning to sink. It never really just "fell over" that's why it doesn't appear to be in bad shape.
If you look at picture 2 I believe it displays a river in close proximity in the background. (poor soil)
Also look at the piers at the base of the building they appear to be hollow. This is hard to explain as it is not unheard of, but very odd for a building of this size.
Gotta love it though.