Der Spiegel has an article and slideshow of Bausünden, or "architectural sins." Most of them are buildings constructed in haste out of the ruins of World War II. If you like horrid architecture, you'll love this. Picture #11 in the slideshow is my favorite. I tried to find another photo of it on the web, one without usage rights so I could embed it here, but none turned up so you'll just have to check it out on Der Spiegel.