I loved Barcelona because it is a very diverse city that has a great variety of sights and activities all in one city. I went with my old neighbor whom I have known my whole life and who is like an older sister to me. We decided that the best way to see the city was on one of those sight-seeing busses. It turned out to be a great idea because it allowed us to see the most sights and get on and off wherever and whenever we wanted.
Here were some of the highlights:
-The Sagrada Familia by Antoni Gaudi
-Park Guell also by Antoni Gaudi (Although I recommend going early in the day before it gets crazy crowded-same goes for the Sagrada Familia, by the way.)
-The Gothic Quarter (probably my favorite)
-Place de Catalunya
-and Tapas galore!