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Ugliest Buildings

5. Geisel Library; University of California, San Diego, CA This library is one of the best examples of Brutalist architecture ever built, and that's not a compliment. Named after Audrey and Theodor Geisel (better known as Dr. Seuss), we think it would have been a whole lot prettier had its benefactor also been its architect.

World's 10 ugliest buildings

From Thailand to Toronto and both American Washingtons--these 10 office towers and public buildings, say Reuters photographers, are the ugliest in the world. What do you think?