Since we were traveling to two different countries over break we only spent a day & a half in Barcelona with Tuesday afternoon being another travel day to Madrid.
Our first tourist activity included taking the metro to Park Guell. This gigantic park had a lot to offer including a pretty awesome view of Barcelona in the Monumental Zone. You had to buy a ticket to enter the Monumental Zone but in my opinion it was worth every penny. The architecture was stunning and I loved the designs and colors displayed. Gaudi's work is beautiful.