Holy Wow. I am sure many of you have heard about the Metrodome, home of the Minnesota Vikings, collapsing but if you have not watched this video - it is a must see. This is a time lapse and it is so incredibly terrifying. Thank God there was not a game taking place when this happened. Click here for story and a picture of the roof afterwards.
Here is another version. It is lower quality, but you can see how much the roof gives in this one.