To say that Barcelona, a city that boasts gorgeous beaches, abundant sunshine, vibrant local culture, a delectable foodie scene, and a relaxed pace, has it all might be one of travel's biggest cliches and one of its biggest understatements. From Antoni Gaudi's mind-blowing modernist buildings to the atmosphere of the Barri Gotic and the lively beach, there's so much to see here that it can be hard to figure out what to do with a visit. With that in mind, we're breaking down yo...