Me and my family are traveling to Spain the end of December , we will arrive in Barcelona and have 10 days to spend , it here has been discussion about traveling down coast ... any recommendations?
South - Tarragona is a possible day trip from Barcelona. Valencia is good for 2-3 nights. North - Girona and Figueres (Dali Museum) are good day trips from Barcelona - in summer it's possible to combine them in one day, but between shorter opening hours and earlier sunsets, it's probably not feasible. Girona is a nice place for a couple of nights. Note that there are lots of things to see in Barcelona itself.