try looking on www.tripadvisor.com or www.virtualtourist.com websites for places to see do and stay!
if you like art visit places like Casa Batillo, Parc Guell, Casa Mil� also known as La Pedrera, Climb the stairs up the sagrada famillia (Gaudi's tomb is in there), all designed by Gaudi
if you like Dali visit Figueres and see the Dali Museum
(Dali's tomb is in there) not just his art on show also lots of jewellery he designed!
www.salvador-dali.org/museus/figueres/en_index.html
A trip to the town of Girona is nice reminded me of Venice
Think the tourist buses do the route of Figueres and Girona in one trip
Enjoy!