These days, pop culture rules the world -- particularly when it comes to marketing. And the travel industry is no exception. Pop culture tourism is officially a thing. From 50 Shades of Grey hotel packages to Game of Thrones tours, the smartest brands and destinations are capitalizing on hot pop culture trends to attract travelers and earn media attention. Here, we look at some of the best and brightest tourism campaigns, the savviest brands and the smartest ways to take advantage of the trends.