April 2007, we visited Barcelona for 5 days, our main visits went to the Sagrada Familia, Parc Guell, La Pedrera, the seafront, Tibidabo and Monserrat (on Easter sunday, we did not get the chance to get in due to terrible traffic).. furthermore we made some long walks through the city.
The main points of attention in that short period: Gaudi, Montaner (modernist architects), modern architecture, sea-side and surrounding hills.