Travel and Leisure’s list of the fifteen ugliest buildings in the world mostly just seems to reflect a strong dislike for postmodern architecture. I think this picnic basket building is pretty cool, for example. And this Chinese coin building isn’t ugly at all. This thing in Portland is genuinely bad, but it’s hardly one of the great aesthetic crimes of all time.
I would reserve my ire for projects like City Hall / Government Center in Boston that sort of kill pleasant urbanist neighborhoods. But if you’re going to put up a big office complex in a field somewhere, you may as well try to make the building interest-looking.