We've looked at some of the greatest buildings in the world and some of the greatest architects to ever live, but even the top names in the field aren't untouchable. A long tenure of successful buildings can make a great architect, but it doesn't guarantee a spotless career. Maybe their egos get too big, or maybe they have a lapse in taste. For whatever reason, the greatest architects in the world make mistakes sometimes. Here, we look at The Worst Buildings Designed by the Best Architects.