The curtain isn't going up until May, but the scaffolding on the new Mariinsky Theater in Russia's second city, St. Petersburg, is coming down, and the locals aren't happy. The outward appearance of the $700 million performance space -- known as Mariinsky 2 -- is coming under blistering criticism on blogs and across the social-media sphere. Amateur architecture critics have likened the theater to a drab department store or a giant toilet. Mariinsky 2 is hardly the first public building, monument, or performance space to elicit withering rebukes from those it was intended to serve. Here's a look at a few public buildings whose designs were widely ridiculed. In many cases, time has softened those opinions. (13 PHOTOS)