you will of course want to see the architectural works of Gaudi, not just the Sagrada Familia cathedral but the Parke Gruel and the many buildings around the city. the regular cathedral and the square in front of it are usually lively....not to miss is a walk down Las Ramblas, a large pedestrian walk full of street performers etc which starts at the harbor with its statue of Columbus facing the west to the new world...one of my most memorable experiences was walking around on a rainy day with all the street noises and walking into a bar to use the restroom, met with complete silence with a room full of deaf people communicating in sign....those random things make the most vivid memories...Enjoy!
