Three popular eye trick museums have captured the attention of citizens and tourists, alike: one in Seoul, one in Busan, and one on Jeju Island.  Three different locations, each boasting optical illusions that allow you to pose within and upload to your favorite social networking sites.  That, or—good idea alert—these might make the perfect Christmas card!  Next time you wind up at one of these museums, be sure to snap a pic and send it to us! Take a look at some of the eye-catching pieces the museum has to offer: So? Ready to book your flight? (Source: